You need to catch yourself on--as you approach the half century your main purpose in life should be to lavish love and presents upon your grandchildren, or if you don't have these, upon yourself. If you haven't done it by now, there's no point in wasting your decreasing time learning an instrument. You won't alienate your loved ones' affections by singing, even if you don't have a great voice, but your efforts on an instrument could prove fatal (to their affections and even yourself, if you try too hard). Consider how much more rewarding a well-knitted pair of socks would be, as a gift for loved ones or for yourself, the kitchen is nearby, and don't neglect the consolations of religion.