My Thoughts on Religion

I have issues with a lot of extremely religious people. Sometimes it seems that their actions and words contradict their faith and that makes them seem, to me, like they don't have any idea what they're talking about.
First off, on the subject of religious terrorists, it seems to me like most religions frown on this behavior. I know Judaism and Christianity flat out have the commandment "Thou shalt not kill." I can't say the same for Islam because I don't know much about the religion, but it doesn't make sense that a religion which so many people practice peacefully would allow such violence against your fellow man. Also, to the people who commit suicide during these acts, isn't it a sin to kill yourself?
Another thing that doesn't make sense to me are Christians who are so close-minded about homosexuality and other faiths. I know plenty of good people who are gay or Jewish or what have you and I refuse to believe that God, who is supposed to be kind and merciful, would send these people to Hell over something as insignificant as sexual orientation or religious beliefs. If God is kind and forgiving then surely he wouldn't let these people who live good lives be punished for something like that.
Now, before I get comments from Christians quoting a bunch of Bible versus at me, let me say a few more things on this. First of all: does every Christian rest on the Sabbath? Does every Christian not eat pork? There are rules set down in the Bible that religious Christians do not strictly follow. I don't see any reason why the passage in the Bible stating that homosexuality is wrong has any more reason to be strictly adhered to when others aren't. Besides, being gay does not hurt anybody, it doesn't make you a bad person, and anybody who finds love in any way, shape or form is lucky because it is such a rare and beautiful thing.
Also what some people fail to realize is that Christians, Jews and Muslims all worship the same god. They have different names for him and worship in different ways, but it's the same god, the god of Abraham. We should be allowed to worship in whatever way we see fit.
The Bible is an old book and we can't expect every aspect of it to still be relevant today. All religion is flawed because human beings are flawed and make mistakes. I don't thing there's anything wrong with being religious, I believe in a higher power, but I also believe that we can't accept everything our spiritual leaders or holy books say blindly. We have to think about what we believe to be right. We are all human beings and we all have to share this planet, so respecting one another and accepting our differences is important. People who use religion as an excuse to hate seem to be missing the point.
The last thing I want is to be another person putting their thoughts on the internet when they really don't know anything about the subject. If I have said something incorrect because of my ignorance, please feel free to correct me in a calm and respectful way. I acknowledge that I make mistakes. I have tried to be respectful in writing this post and I don't mean any offence. I am just slightly confused because of the reasons mentioned above. All I meant is to put these thoughts out there for consideration. To me, too much time and energy is wasted fighting over these things and I find it pointless.
Callie