Repair or Replace?

I've been thinking about how much easier our economy makes it to replace things rather than repairing them.  Amazon is always only a couple of clicks away, whereas repair requires leaving home.  On an actual errand. 

Or, more likely, errands, because different repairs require different shops.  Recently, I had some boots and shoes resoled.  Still on the list: get the handle welded back on a pan, and get a watch repaired.  All different locations.  Fact is, I bought a new watch months ago, maybe almost a year, because of the hassles with locating and getting to a good repair shop.  I'm still hanging on to the other watches, though, with the idea of getting them repaired eventually.

Recently, the front fender on my bike came loose and broke.

I've been meaning to get to the bike shop for a new fender, as well as some other adjustments.  But that's another errand, and I have to leave the bike, which means I have to find another way to get home.  So I decided to try fixing it myself instead.

A couple of screws, some gorilla tape, and a few minutes later:

How long do you think it will last?