I hate to throw anything out. For the most part, if it can be repaired, I'll repair it. That's what happened in the past, anyway. Recently I've come to the conclusion that some things aren't worth the cost of the materials needed to repair them.
I've a pair of Wally World sandals, about 4 months old and they are falling apart. At one time I'd just break out some good glue and repair them. Not this time. Quality glues have really shot up in price. Instead of wasting the glue on cheap sandals, maybe extending the life a month or two, I used the glue on the sailboat. Unlike the sandals, the boat should last years, so it's worth using the good glue on it.
What about sandals? My next pair I'll make myself out of old tires. Those will probably cost next to nothing and last forever.