How the Alien rejected Christianity

I grew up in catholism and protestantism, one on each side of the family. Yes, there was some issues between our families because of that but they were at least civil to each other. While both sets grandparents were definite "every sunday, pray before bed" people, I never quite got the whole religion thing. As far as I was aware (which admittedly, was not much), churches were for old people. I sure didn't understand the point of alter boys and why they were there. I didn't think too deeply into it. Before I go any farther, I must reveal a detail. I do happen to barely have a blood disorder similar to hemophilia. This blood disorder has done nothing bad to me, I have never taken any daily medication for it (save for after one surgery, for a week), and all tests came back normal and healthy. However, because of the disorder, I could not play sports. Wahoo! That's one of the best parts about having a disorder - instant excuse for not playing any sport. I've hated sports longer than I can remember.
So anyway, having this disorder qualified me for special things of course, one of which was camps for kids with disorders. My parents had just barely enough money to buy food and keep the roof over our heads and the 15-year-old pieces of junk cars running. They wanted to give us a good childhood (By this time I was 15 when we found out about camps and such) and so they sent us to Camp Barnabas (www.campbarnabas.org), one such camp for kids with disorders ranging from mental to physical in any way. Each week had a purpose, and I attended during the oncology week. I was around the age of 15. I had spiky short hair. Something I still don't regret having at least once in my life.
Long story short, it was a wonderful camp, based on Christian values and teachings. Bible study was daily. Prayers were said. Plays were performed. Sermons were given (especially on Sunday). I still didn't get it, until one girl gave a very emotional testimonial. I was overcome with emotion, crying and such. One of the counselors said that that was Jesus wanting into your heart and let him in. Wonderful feelings came from that...I felt part of the group. I thought it was forever like this. The week ended, and soon November rolled around. You know, the time of year when Christians are spreading joy and fellowship all over the blooming place? Apparently it never got to me, and despite my efforts to live how I was supposedly supposed to live while in Christ...it faded. The emotion, the happiness, whatever Christians want to call it - it faded. Despite the fact that the holiday should have rejuvenated my "Christian spirit", it didn't. The next year, I went back to camp and lo and behold, the spirit returned to me. Around the same time as the previous year, lost the feeling again despite my harder effort to keep it alive. Back to came, and it was back! Then gone again...
I gave up after that point and haven't been back. Whatever it was, it wasn't something mystical that always stays with you. I guess this may be the reason why fellowship is so important in Christianity, to maintain that feeling of love.

So if fellowship is required to maintain that, and Christians feed off of that love, are they not then comparable to psychic vampires? Also, if other people are needed to maintain that feeling of love, then why need the whole Bible and Christ stories and church too? I've been to a skeptic's convention, it was grand, I felt like one of the guys with people I've never met before! I warm up to people quick, and some people don't, sure. However, meetups happen all the time for all different things in life. If general group get togethers are all that is needed, then needing church and dogma and preachers and heaven and hell are not.