Drought tolerant and yet thornless.
Don't need pruning unless you consider plucking off too many offsets.
Don't reseed everywhere, or if they do, they don't have a nasty taproot that makes them hard to pull up.
Very very easy to clean up the bed in the spring.
Do just fine in a pot.
I have a lot of gardens with other plants that I put in 25 years ago that I wish I hadn't because they are too much work and/or take too much water.
