I'm probably putting a target on myself for 'Autistic' ratings indulging in embarrassing personal info on here.. but what the hell.
No, not anymore at least.
At one point in time I was curious about it. I didn't want to make anyone gain a bunch of weight, but the idea of a woman wanting me to feed her and wait on her hand and foot attracted me. Once I started dating my now wife, I told her about my fantasy, she thought it was hot, and so we tried it out a few times. At least for me, it was something better in fantasy than practice. We haven't done that again in years, mainly because I just haven't felt any desire to.
I am not sure of all the reasons for this, but one I'm sure one is that I love her too much. When it comes down to it, fetishes that work on dom/sub principles really rely on suspension of disbelief and the ability to objectify your partner temporarily. Its hard for me to believe a truly loving couple with a healthy relationship (both being roughly equal) can indulge these fetishes deeply and regularly. It might seem hot in the heat of the moment to put a leash and collar on a woman and have her beg for her master's mercy, but when she is the love of your life... she's not just a nameless fantasy girl anymore.
As for the fat fetish/bbw aspect of this... Like I said, it is completely separate from feederism but often coexists. I too at one point loved, almost exclusively, larger women (appx 250 pounds). But again, this started to change around the time I began dating my future wife. Part of it might have been due to us living together and me seeing all the inconveniences a big girl deals with, like the nightmare of buying clothes. After a couple of years, I began encouraging her to lose weight. Ultimately, we ended up in a much better spot relationship wise because of it. I think part of the reason guys like big women, especially the super morbidly obese ones, is that it makes them feel superior. I'll be honest, it was nice feeling more attractive than my girlfriend in a way, but you have to grow up eventually.
Our egos are an illusion, and our ultimate downfalls. Stop caring about glorifying yourself and you will be a lot happier and so will everyone else. And for those that are married, live for your partner. Redirect those selfish prideful emotions into glorifying your wife instead of yourself.