The best choice...
The best choice: The best possible option is that we should regard Qur'an and Sunnah as a yardstick of excellence, refrain from interfering into the matters concerning the Islamic law by applying our intellect into it and must slake the thirst of our soul by resorting to these two affluents (i.e. Qur'an and Sunnah).
We must recognize the sayings of the saints, observations of the scholars and the customs observed within one's community in case the said things confirm to the standards set forth by Qur'an and Sunnah and likewise we should rejectfully shun them in case they do not.
It is not an uphill task to understand religion: A myth which has gained much currency among the masses is that to have an understanding of Qur'an and Hadith is a difficult task for it requires a lot of knowledge and as long as we are ignorant, we can neither understand it nor we could act upon it. Only the saints and pious people possess the capability to act accordingly.
This notion which is nursed by them is absolutely baseless because Allah the Exalted has stated that the verses of the Noble Qur'an are explicit and conspicuously clear as mentioned in the following verse: {And indeed We have sent down to you manifest Ayat (verses) and none disbelieve in them but the Fasiqun (those who rebel against Allah's Command).}(V.2:99) The above statement means that it is not difficult to understand them at all but it is difficult to act upon them as their compliance seems to be fairly hard on one's self and therefore the disobedient ones do not recognize them.
Why were the Messengers sent? It does not require a lot of knowledge to have an understanding of Qur'an and Sunnah as the Messengers were sent to provide guidance and directions to the ignorant and the illiterates and to impart knowledge to the unlearned people as stated in one of the verses of the Noble Qur'an: {He it is Who sent among the unlettered ones a Messenger from among themselves, reciting to them His verses, purifying them and teaching them the Book and Al-Hikmah (legal ways).
And verily, they had been before in manfest error.}(V.62:2) This is one of the great bounties of Allah that He deputed such a Prophet who taught the unlearned, purified the impure, imparted knowledge to the ignorant, wisdom to the unwise and guidance to the delinquent.