Clover in grass should be the norm, and it was the norm till broadleaf herbicide became the new one. Because it also kills clover.

You shouldn't be spraying herbicide on your lawn, and if you're not there's no reason not to have clover.

It'll grow with the grass, and since it can pull nitrogen out of the air, in areas with poor soil, the clover becomes dense and accumulates nitrogen. Once the soil improves the grass comes back in.

As a huge bonus, clover "learns" the level you mow at. After so long it will just stop growing higher. If a patch is all clover you might only have to mow it a couple times a year.

And you'll start seeing a shit ton of bees, lightning bugs, and all types of insects people always complain disappeared.

Putting clover out is a very small thing that has huge benefits. But people still aren't really doing it.