Very good and honest post Bschuhma and very good advice from all.

Having myself just played a guest spot at a guitar club, reading your post makes me realise that how you feel now is exactly how I felt a few years ago but there, I have just done what I always wanted! How I overcame that feeling of uselessness is something I find a bit hard to summarise but I made it to a half decent level of playing and so can you, and probably go way beyond! You just need to stick at it and do your own thing but within the structures that are available to you.

My progress is posted on Youtube and might be some encouragement for you.

Good luck!