In the days when no one made comfortable bras for big girls, and that's most of my life, I used to do exactly the same.
Now though, my bras fit, are soft and comfortable and I hardly ever know I'm wearing one, so it doesn't come off until the rest of my clothing does.
DoraMarr Yes, many times in the old days, so much so that I just took them out.
Iam64 I don't understand what's indecent about not wearing a bra. If you have large breasts it can be uncomfortable sure, but there are some lovely stretch 'sleep bras' which solve that problem. You are decent (IMO) in any state of undress.