Not all bees are "good bees". I am kind toward most bees, but the common yellow jackets are not native to the US and have really decimated native bees (and other insects) both by outcompeting with them and direct predation. So, kill all the yellow jackets you can. The only really threatening bees are the hornet-type wasps, yellow jackets and the various hornets. I feel no remorse about killing them anywhere they might encounter people.
The "best bees" are the bumblebees and solitary bees like Mason and Orchard bees. They are far more efficient pollinators than honeybees, but honeybees get the PR because, well honey.
The carpenter bees are another matter. You should protect your wood structures, but they are harmless to people and not worth hunting down unless they are damaging your buildings. I find it very satisfying to wait until they climb into their hole, then push a nail in behind them, turning their ill-gotten home into their tomb.