Not doing something you don’t really want to do is scarily easy. You find excuses, which may or may not also be legitimate reasons. You ‘forget’. You put it off until later and then forget. You decide something else is more important.
I have done all of the above. Probably so have you.
One of the harder things in life is to do something not because you want to, but because it needs doing. If you don’t do it it either won’t get done or it will fall to someone else, so save yourself or that other person a little time and aggravation, and just get on and do the thing already!