Why you are asking your question in round-about-way? You have clarified in your comments that you are the husband who likes feet and your wife does not. Be bold to say so.
Everyone has some fetish or the other. Foot fetish is one of the milder ones. Think of those who have a fetish of having sex with dead bodies. Are you aware that many of the Technicians working in Morgues have this fetish and are able to satisy their lust.
You have a foot fetish and your wife does not. So what can you do?
Most women like their feet to be massaged with oil/cream afte a bath. Ask her to lie on the bed and you sit at her feet and then gently massage her feet. Do not i mmediately take out your penis and start rubbing on her feet. This your wife may not like. But if you do what I said daily then her resistance will break down and she may allow you.
Another thing you can do is ...to get a bucket of warm water. Ask your wife to immerse her feet in it and gently scrub of the hard skin of her soles. In between you can kiss her feet, if she allows you.
Show her this picture I have posted or videos of feet worship. Stop looking for other women to fulfil your fantasy. It will destroy your marriage.
All the Best.