This doesn’t work.
If it were only about novelty, then why aren’t there more bellybutton fetishes?
Being a fetish-having person, I can tell you there there is more than just an attraction to the object of your desire. It is a primal, deep, uncontrollable NEED to see or touch the object.
I am not a foot fetishist, so I do not presume to know the intimate details of what they like, but I can promise you, it has nothing to do with novelty. Fetishes have so many variants also; there are foot fetishes, sock fetishes, feet squishing stuff, toenail paint things, some want a footjob, some want to lick them or suck on toes, some people like big feet, small feet, the list goes on and on.
Maybe read just a tiny bit? https://en.wikipedia.org/wiki/Sexual_fetishism#Cause
Old people who are assholes were probably always assholes. They were once young assholes and got older. Conversely, old people who are good, were probably good people when they were younger, they just got old.
Most people don’t stray far from their roots. Few are those who make a meaningful change. Some choose goodness as a goal, some get their asses kicked by life and turn bitter.
I guess the lesson is don’t be an asshole. if you are one, work toward being less of one until you aren’t one anymore. Try not to let life get you down. If all else fails, drugs.