Mike,
The old guy was right. If it ain't fun--don't do it. That applies not only to music, but everything you do in life. I've been very fortunate to live as long as I have, and I hope to live a lot longer, but after coming real close to loosing my life many years ago, I quickly discovered that life is pretty darned short. Live life to the fullest, enjoy every minute and every aspect, and with luck, you'll make it fun for a lot of other people. If you can make a lot of people get off their butts and dance the night away while playing in the chord of "C", transposed or not, then you're having fun and so are they--that's what it's all about.
Cheers,
Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)