I have 12 lenses. 5 of them cover 24mm; 3 cover 85mm; 3 cover 200mm. Each lens has a purpose. Selling a lens has generally resulted in buying it again so now I just keep the original lens if it doesn't make me unhappy. Retaining a lens for its special purpose is worth the happiness of having it when the need comes again.
If your only tool is a hammer then every problem is a nail. Sometimes it is nice to have a screwdriver too.
Slimming down the pack prior to the trip is always a challenge.