I personally think uncut is better as it looks more natural, and is probably better for bees and other insects. The flowers and other weeds that grow make it look nicer as well.
I don’t think cutting a lawn is that bad as long as its not done too often, though.
edit: grass. This is a post about grass.
Edit: Lawns, like the grass in your lawn, jesus christ.
My dream:
In every city and town, local horticulture and landscaping shops would have hearty grass alternatives, a combination of plants selected from the local biome, that could withstand moderate foot traffic and don’t require replanting every year.
I’ve never actually seen any horticulture shops offer such a seed package, granted I haven’t really been looking since I don’t have a house.