"...But I'm Not Religious."

A favored phrase for many who sense the spiritual reality of this world but are too embarrassed to admit it is that they "may be Christian" (or some other religion) or perhaps "may believe in God", but they certainly aren't religious. "Religion" to these people is, in few words, the legality behind a belief. They believe that "religion" is what creates pedophile priests and doctors who refuse to treat a man dying from the flu because he's gay, if that ever actually happens. Here's the big secret - it's a lack of religion that causes these things. The same lack of religious education that causes people to misunderstand their beliefs in a way that is damaging and bad to OTHERS (kicking your teenage daughter onto the street because she became pregnant out of wedlock) is what causes people to misunderstand their beliefs in a way that is damaging to THEMSELVES (i.e. sinning against God, against your own soul etc.).

Religion is, when done correctly, the means through which we work together as terrible, flawed people to understand what we are supposed to do in order to become more like Christ and follow Him and His commandments correctly. We gather together as followers to be each other's accountabillibuddies, under the direction of someone who should be well versed in leading us to be more like Jesus.

If you go to a church that says we should definitely kill gay people, that is a failure to follow Christian religion properly, not an example of it "working as intended". It's not that the system, the religion, doesn't work - it is being wholly misapplied to a faulty conclusion. Such heresy is wrong, as is the heresy that it's A-OK to be gay. These false ideas come into the Church the exact same way, they are simply opposite conclusions of the same problem - misusing scripture, letting our wicked hearts guide us. 

If you use your "spirituality" just to figure out how to live here on earth most pleasantly without actually considering its true, eternal purpose, you might not end up somewhere as pleasant. There are, in fact, "religious" rules for your "spirituality". Using bits and pieces of Christianity, the nicest sounding ones that cause the least trouble of course, just to augment your secular beliefs and lifestyle is atheism in a costume.

Now, you certainly don't have to go to church to go to heaven. However, this is more reserved for people who, for whatever reason, cannot get to a church even if they wanted to. If you can go to church, you should. If the church you go to preaches false doctrine, then either try to help heal that broken church, or go somewhere else. By not going to church when you could, you ignore that Jesus died to form the church. It's HIS church. 

Yes, 'church' refers to the body of believers and not necessarily a physical building. But I severely doubt people arguing this point are meeting with other believers for biblical lessons and teachings ANYWHERE. If they are, then good, you are, in fact, going to church. Good job. Otherwise, this argument is just used to justify people who are too lazy or uninterested in actually fully committing themselves to Jesus.

There is no "spiritual but not religious" for Christians. Religion is simply the catchall term for the collection of beliefs that one has about the truth of the world and of existence. It has a certain connotation and colloquial understanding, surely, but it refers to this collection of truth statements in which one confesses belief. Everyone has a religion, whether it's documented or not, as everyone has beliefs about the truth of the world. Essentially, one's vibe.

So, unfortunately, you certainly ARE religious, but it just may not be the religion you tell people you are.