I love costume dramas, I love performing in them, because in a funny kind of way, you feel more free. You know about the period, you can read the books, you can see the paintings, but you've never actually going to know what it was like. You can kind of stretch those boundaries a bit.
Some persons can give themselves away to an ambitious pursuit and have that be all the giving-themselves-away-to-something they need to do. Though sometimes this changes as the players get older and the pursuit more stress-fraught. American experience seems to suggest that people are virtually unlimited in their need to give themselves away, on various levels. Some just prefer to do it in secret.