I won't go into too much detail, but overall I'm a rather humble personality, and there's only a few things I take pride in, my linguistic talents being one of them. I just despice the idea of someone teaching me on it. I'd much rather learn it myself, just by myself.
You could say it's just useless pride and I'm just being too obstinate and prideful, and you'd be right. But it is how I'm hardwired and this is how I'll do it. Always have, always will.