I come from a very religious family, my mother is a professor of Islam and Fiqh in one of Dubai's top universities. I myself am a hafiz of 14 Ajza (Paras) of the Quran, have studied Fiqh under known scholars in Saudia Arabia for 2 years and have done 2 Hajjs and many Umrahs.
Even though there was a pressure on me to be religious from the start I actually liked it and wanted to know the truth and the reason of our existence. I actually even studied the Bible and used to be a big fan of Ahmed Deedath and debate with other people interested in the topic.
But there was always something nagging in the back of my mind and the more I came to study religion in it's finest details the more it bothered me. I even took to studying other religions in detail just to see if they had the answers but they were all the same. I wasn't satisfied with the many discrepancies and the cop out of God Knows Best whenever I questioned the status quo.
Anyway when I was about 23 or so and the family were going for their annual Umrah, I told them point blank that I didn't believe in religion anymore and there was no point to it. They tried to convince me with love at first and then with fear as usual and then stopped talking to me for a while but I held fast in my position. It was a good thing that I had a job so I could support myself. My parents would offer me support of course but it came with emotional blackmail and other conditions so I stayed away from it.
As time passed by they realized that I won't yield on my position and we came to a truce on middle ground. My condition was that I did not mind religious things as long as I wasn't being preached ot forced to do something I didn't want to.
My mother still tries to tell me recite this Surah on that day, or recite this kalmah for whatever, mostly out of habit or maybe because she still thinks she can save her first born and I do give her the satisfaction but tell her in clear terms if she overdoes it.
Same goes for the Mrs, she is Christian and hardly practicing but we had our debates early on and do not force our ideologies and beliefs down each others throats. We celebrate Eid, Christmas, Easter etc but it's mostly tradition and I time to get together and eat, drink etc rather than anything religious.
I have mellowed down with time and do not have such a confronting approach as before nor do I usually like to discuss religion but if is unavoidable I make my stance very clear and am not apologetic about it.
The best thing here is nobody really cares about your religion, it is something personal and nobody judges you for it,. It's mostly a Desi thing in the SC, identity crisis Pak/BD thing in the UK, Christian Orthodox thing in Eastern Europe, Bible belt in the US etc etc who try to show how much more pious and better they are than everybody else.