I just started the luthier program at Musicians Institute and have a question for y'all. In class I've asked a couple questions about using Pine and have been told that it doesn't make a good wood for a build because it's "unstable." When I pushed for clarification I was asked why I was "fixated" on it. I was told that Pine is too soft a wood for guitars and that screws would eventually loosen and strip out. It seems that quite a few builders here have used this wood. What is your long-term experience with it?