This is one of our very favourite vegetables. We have no problem eating it every day when it is in season. Preferably fresh from the garden.
Asparagus is there for a very long time. Once planted and established (it can take 2-3 years before you can harvest it), it will give you delicious spears every spring for the next 20-30 years.
It's also quite maintenance-free - just make sure it gets a good feed once a year and stays as weed-free as possible.