Well, I would compete if it came to my locale, but it would be a good thing to institute some rules for sanitary reasons. That's what I say, anyway.Solving with feet is definitely not an event that I am interested in (Viewing or competing) but I don't see a good reason to get rid of it. If hygiene is an issue then institute a rule where competitors must wash and dry their feet before each solve. This is not unreasonable.
If you're solving with hands then you aren't going to grab your cube after eating a slice of pizza and a bag of cheetos right?
A lot of people have put in a ton of work to be good at this event, and it is certainly not boring!
I wonder if there are any feet solvers who do it because they are otherwise disabled? (Amputees or have mobility issues in their upper appendages)