Fearing God, does not mean, to do or not do things, for fear of Hell.
I use to think like this. You should read Surah Zumar, the "fataqoon" after description of hell.
لَهُمْ مِنْ فَوْقِهِمْ ظُلَلٌ مِنَ النَّارِ وَمِنْ تَحْتِهِمْ ظُلَلٌ ۚ ذَٰلِكَ يُخَوِّفُ اللَّهُ بِهِ عِبَادَهُ ۚ يَا عِبَادِ فَاتَّقُونِ | There will be canopies of fire above them, and [similar] canopies beneath them. With that Allah deters His servants. So, My servants, be wary of Me! | Az-Zumar : 16
I believe if hell and day of judgment reality and God's reality and the light of Imams (a) was clear as it will be then, with everyone having clear sight to it today, then fear of God would not be a good thing.
If God was clear and his proof not hidden, and in fully display, fear of God would have no or little merit.
It would be trivial and also almost completely selfish. However, Quran emphasizes on fearing God while he is hidden, fearing God in regards to what is hidden. This means God's wrath and his right to punish in hell, we can simply deny it. It's not like water we drink or sun we see, it's unseen, and only access to God now is by the vision of the heart which is love. Love if doesn't believe in the beauty of God and the balance between his mercy and wrath and the priority of his mercy but right of his wrath, won't see God.
To see God takes love vision and humility. Since hell is a real threat, humility combined with love, is what causes people to fear it. Otherwise, people don't take it seriously if they don't acknowledge the beauty and majesty of God in this regard.
Right now fear of God in terms of hell, takes us to sacrifice our ego, that we are worthy of punishment without his mercy, and that we hope by God's grace that he saves us from his wrath. That he doesn't cause us to become blind deaf and dumb and fate us to hell due to our sins.
Sufis and Rumi tend to emphasize this fear does not have merit, but I believe not having it, means, you are arrogant towards real danger. If God was not hidden, then fear of God would be without merit, but because to a great degree even if one witnesses miracles and unseen light, he is still hidden, it is due to love of who God is that one accepts hell and it's out of knowledge of failing one's duty towards God that one acknowledges they merit hell.
Also keep in mind, almost all sins are due to love of this world which is the inward true reason why outward shirk is condemned. That is idols are taken for love for leaders and society, which is for sake of convenience of this worldly life and selfish identity and ego.
So while believers acknowledge God intellectually as One, the heart may follow caprice or equate others with God all the time, and it's an obligation to be inwardly free of shirk as well. This is where prayers of Sahifa Sajjadiya and likes are very important. When one is caught between Satan and Allah (swt), Dunya and akheera.
Otherwise, there also du'as for those who have defeated the lower self. In fact, commanding to good and forbidding evil is forbidden for those who have not. This is a problem we have with clergy set up too. Not every clergy has defeated lower self and the system is set up for disaster in this regard.
And one thing you always get wrong about me is I don't believe in Taqlid or a clergy like class system we have today.