I think that the whole "responsibly" thing is what I am stuck on. Walking away from everything doesn't seem logical or responsible at all.

It seems it is more of a question of who do I want to be unfair towards? I feels like it is being unfair and irresponsible to myself to stay in a situation that I am not as happy as I could. But it also seems irresponsible and unfair to simply walk away from the life that I have already started down the path.

Thank you for the welcome. It is helpful to read and see the support that is here.