I agree, I love hearing the bees in the maples in early spring, watching them on the apples and cherries!
Many people think, however, that they need to provide food for the bees, and think that they need to plant a half acre or even an acre of something to keep the bees alive, and while it certainly benefits them, for the most part unless you have a lot of hives and a lot of acreage/time, it is not usually necessary.
The best plants for bees are the usually the ones incidental to us. Trees, invasive groundcover (sweet clover, knapweed, knotweed) are the best :(.