I use a footprint/ground-cloth. To me, the only reason not to is if needing to be ultralight. My standard footprint is heavier weight clear plastic. I do have a lighter polyester one picked up dirt cheap at REI's return sale, if needed.

I have one hole in my tent; Back in the '90s, first time used, was stopped in a couple days of rain so was cooking in the tent, dropped a lit match, instantly put a small hole in the floor, footprint was no help there. I'm much more careful now. But I was able to patch the hole easy, a Park sticky patch on the inside and outside of the floor, still in place fine.

If carefully thought out, a footprint can have multiple uses, or something else used as a footprint. Perhaps your footprint is a fully-unzipped rinko bag or other for bike transport. Poncho. Transport sacks or duffle that holds your panniers in transit. Windshield sun reflector material that you tie over your trailer or panniers in the hot sun to keep contents cooler. Along with tent fly, used to collect rain for drinking water. The footprint need not be one piece to serve its purpose.