In some way simpits are cool but in MANY other ways they're pretty childish things. Toyboxes for grown men 
most men have unnecessary toys, whether it be a simpit, an unnecessary vehicle such as a seldom used show type vehicle, some form of recreational vehicle like a boat, or quad, or motorcycle or waverunner. All nice to have but unnecessary just the same. maybe you have a hunting or fishing habit and have spent a fair amount of money on equipment for this hobby.
Most men have hobbies that are unnecessary, this is just another type of indulgence.