Long story short, coming from someone in his mid 40s and has been in the community since 1996ish.
Yes its worth it. Be open, be caring be considerate. If this is something you are genuinely into then its not going to go away. It's worth the time to seek out and be with a partner that wants to do this with you.
If she's into it then great. If she's open to it but undecided you might not want to say how you want on her hands and knees eating out of a trough until she's 600 pounds. Dipping your toes in is better than hitting her with the proverbial truck.
My partner was not really into it, but enjoys the attention and care she gets from me. Went from 230 to 330-350 and has been there for about 12 years now at the upper range. I wanted her over 400 but there's always a compromise to be had.