The OP wanted to hear some duct tape stories...so here's mine.
1978, spring break at Occidental College, buddy of mine borrowed a friend's bike, we flew up to SF, and rode back down the coast. Somewhere around Carmel his right rear rack stay breaks, almost destroys the rear wheel and ending our ride. I had a small roll of duct tape (never go on a tour without it, someone once told me), taped it to the seat stay, and we made it back to LA with no issues.
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If someone tells you that you have enough bicycles and you don't need any more, stop talking to them. You don't need that kind of negativity in your life.