Noctem
Explorer
Your right, but I've grown really attached to my character over the past few months, and I never intended for my character to end out this way. I started as some nerd with two swords and no story. But I've become a demon hunter with a tragic background just doing everything he could for the good of the world. It just so happened that nobody else wanted to heal and nobody else wanted to tank, everyone just wanted to goof around the under dark, jumping from fight to fight but not knowing what they meant. They didn't share my character's goal to slay Demogorgan. They were just along for they ride and, personally, didn't really care
Well then you have to ask yourself what's more important. Your own character, even though the rest of the group is not enjoying it and will likely continue not enjoying it or the enjoyment of everyone in the group collectively. That is of course unless you can discuss things openly and figure out an alternative. You did say these people are your real life friends. That may help in solving this problem in a way that is acceptable for everyone.
And I'll also say that the bit about being a demon hunter with a tragic background doesn't have to be tied to your mechanical character. You could keep that while at the same time tone down your character. It also seems that there's a rift between what you want to get out of playing dnd and what everyone else does. But they do in fact care, you can't say they don't any more. If they didn't care they wouldn't have voiced their frustrations with you and your character like they did right?