بِسْمِ اللَّهِ الرَّحْمَـٰنِ الرَّحِيمِ
Assalaamu'Alaikum WarahmatUllahe Wabarakatuho
100% Correct! It will be great if all becomes Alims and spend their lives in way of Allah. But if you see around, the quantity of laymans are more as compare to Alims. Actually the number of Alims are like salt in flour in this time. Every one can't understand language of Ahadith. Even if you have knowledge of Arabic, still you will find confusion in most and most of Ahadith. How can a layman not aware of any Islamic rules and a scholar who spends 6-8Years far away from Home in Maddrassa and eat 1kind of vegitable for 6months and do what their Teachers commands can be same!
A layman has no idea that which Hadith is sahih, which hadith is hasan, which is dhaif and so on. Which has more chains of narrarators, which one has less, and what is the difference between it, and which narrarator was a lair, and which narrarator used to be all the time with Prophet Muhammad S.A.W, or which narrarator was not in that particular time and was away in Jihad or buisness or other matter in time which that even occured and which was said in Hadith, or which Narrarator died before this event which is discussed in Hadith etc. Now a layman don't know all this, he don't have knowledge of Quran (all he can do is to recite and read translation), a layman has no knowledge of Ahadith and language of it (as described above), they are not aware from seerat of our Prophet S.A.W.
This is one of the most important topic, So I would like to give another example to make it clear.
إِنَّمَا الْمُؤْمِنُونَ إِخْوَةٌ فَأَصْلِحُوا بَيْنَ أَخَوَيْكُمْ ۚ وَاتَّقُوا اللَّهَ لَعَلَّكُمْ تُرْحَمُونَ
"The Believers are but a single Brotherhood: So make peace and reconciliation between your two (contending) brothers; and fear Allah, that ye may receive Mercy."
(Surah Hujraat, Ayat 10)
Now the message in above verse is Crystal clear, actually more than crystal clear if we read ayat number 9 before this one. So such messages can be understood without any trouble.
And now there is a very famous Hadith, which is usually said:
"Whoever has an Imam, then the Imam's recitation is his recitation."
Now in other place, another Hadith regarding this matter:
"There is no salaat for he who does not recite Surah Al-Fatiha."
Now if you see taking rules regarding some matters could be complicated. There are other examples as well.
There are only two solutions left:
1: All of us (or atleast those who don't agree with Great Ulema) spends time In Islamic Madrassa to learn Quran and to have Control on Ahadith, its language/rulings and Arabic Language (A rule should not be made from translation of Quran or Ahadith, first of All one should learn Arabic and should have full control on it. There is a lot of difference betweeen translations and real Arabic text). And InshaAllah then after exercising he will understand such issues in order to make our judgments and rulings. And I would like to tell, that Allah had great reward for those who learn Islam and teache to others.
2. Another way is that we follow our Ulemas/Islamic Scholars. Because if a layman is not learning Islam from its base, and nor following Imam, then I can't think of its incomming result. If one don't know that how to pray, and nor he is learning, and nor he is following imam of masjid that how he pray and nor asking him so what he will do!? he will sit aside for sure or will be become trouble for other brothers who came to Pray.
In Quran Allah Subhanahu Wa Ta'aala says:
يَا أَيُّهَا الَّذِينَ آمَنُوا أَطِيعُوا اللَّهَ وَأَطِيعُوا الرَّسُولَ وَأُولِي الْأَمْرِ مِنكُمْ ۖ فَإِن تَنَازَعْتُمْ فِي شَيْءٍ فَرُدُّوهُ إِلَى اللَّهِ وَالرَّسُولِ إِن كُنتُمْ تُؤْمِنُونَ بِاللَّهِ وَالْيَوْمِ الْآخِرِ ۚ ذَٰلِكَ خَيْرٌ وَأَحْسَنُ تَأْوِيلًا
"O ye who believe! Obey Allah, and obey the Messenger, and those charged with authority among you. If ye differ in anything among yourselves, refer it to Allah and His Messenger, if ye do believe in Allah and the Last Day: That is best, and most suitable for final determination."
Some scholars defines وَأُولِي الْأَمْرِ that its mean Muslims Rulers, and Many authentic scholars defines it as Hazrat Jabir bin Abdullah R.Anho, Hazrat Abdullah Ibn-e-Abbas R.Anho states that its mean Islamic Scholars. Allama ibn al qayyim says that following Rulers/Leaders results in following Islamic Scholars, as Rulers also ask for matters of Shariah from Islamic Scholars.
So now its clear, those who wants to spend their life in way of Allah, in otherwords actually just get what is good and reject which is useless then what can be good than it! But those who are not learning then only that way remains to them.
I hope I answered your question.
Allah Knows Best