I have been a christian. I have been a girl without any faith at all. And I am now a muslim. Yes I can say my inner peace now is better than anything I have felt before. I can see it from both sides
I can understand that ... but it is still anecdotal and
your personal experience. It's meaningful to
you, but not necessarily to anybody else ...
I have been a 'cultural Christian', an agnostic, a pagan, and now a committed Christian. And I can say that I am happiest, most content and at peace the way I am now.
I cannot compare my present situation with Buddhism, Hinduism, Islam, Judaism, and all the other faiths I have not 'put to the test' - just as you cannot say with proof and certainty that other religions would not give you
more fulfillment than Islam.
You may be convinced beyond any personal doubt that Islam in true ... (as I am convinced of
my faith)
The Qu'ran (being the basis of the Islamic teaching) may tell you that Islam is true ... (as my Holy Book tells me about my faith)
Other believers may reinforce your beliefs and thinking ... (as fellow believers do with me)
... but by the end of the day all we have is our own perception, experience and conviction.
You and I are no different really.
We serve God with all our heart and to the best of our understanding.
Despite our differences in beliefs, we are in the same boat, sister! And dependent on God's grace and mercy, and subject to his will.