I've been 40 all of 2 months, and so I am ready to pontificate.
Life is too short to sit through bad music. If the band is bad, give 'em three songs to change your mind, and then get the hell out.
Life is probably too short to do a lot of other stuff, but tonight that's all I've got. If you're sitting at the bar thinking, "I should be scrubbing toilets," it's time to call a cab.