I used to see regulars as a good thing but by now I have changed my mind.
They overstay ("we're just talking") , they want you to go out with them (I'll buy you some food), they break bounderies asking for unprotected sex, they waste our time by keeping us as number 2, 3, 4: if a new hot girl cancels on them, then they have us as a spare. They ask for selfies, too!
And... it's not at all safer to meet with regulars rather than with new clients, because many women get killed by a long term partners, so you never know.