Definitely not. It involves inappropriate and private sexual matters that violate social ethics and good taste. There are so many other positive things to talk about like hobbies, achievements, and cultural experiences.
It's difficult to say if they are common. There could be a lot of guys who have had such an experience but are too shy or afraid to talk about it. Also, society's view on same - sex activities can greatly influence how often these stories are shared or even occur. Some places are more progressive and might make it seem more prevalent, but overall it's a complex matter that involves personal, social, and cultural aspects.
Well, communication is key. You need to be able to talk openly with your partner about what you're comfortable with and what you're not. And of course, you should be in a legal and appropriate relationship. Another important aspect is understanding your own feelings and boundaries, and not doing something just because you feel obliged.
Well, in modern society, any sexual experience is a personal choice. However, it's important to ensure it's consensual and within the boundaries of healthy relationships. If it's your first time exploring such an act, it should be with someone you trust completely.