Having not grown up in a household witnessing affection between a loving couple or rarely receiving affection as a child I think it delayed me in finding my own footing or "comfort zone" especially when dealing with those who were raised differently.
Oftentimes it's not just about you but also the person you become involved with. If you both have a similar childhood experience you're probably not going to feel challenged to do any introspective thinking about this since you both are more than likely used to not doing a lot of PDA .
On the other hand if you become involved with someone with a completely different background and (expectation) that's when an individual has to decide whether or not they're open to change.
Just because you've never tasted something doesn't mean you won't like it. On the other hand if you try something and you actually don't care for it then it will be a struggle for you to change simply for the purpose to pleasing another person. You have to want to change from the inside.
Ultimately everyone wants to be loved and appreciated for who (they) are. There are only two ways to experience joy and peace of mind in relationships. We either get what we want or we learn to be happy with what we have. The choice is up to us!