Yeah, but that is for each person to decide for themselves. It still is copyright infringment, so doing so does expose one to risks.Believe me Paul McCartney don`t come after you for a couple of t-shirt you wrote "Love me do" on it.
If you make millions using it you can draw their attentions
My only post here was in response to the comment in the original post by the OP where said she doesn't use copyright stuff, and those lyrics are copyrighted. It was possible she didn't realize it, so I was trying to be helpful to let her know. What she does from there is her own business, haha. No pun intended.