It hurts a little in the start but once you get used to it then the fun begins. I can assure it is even more fun then normal sex but as more risky. Use proper protection and pure lubricants before having Anal sex.
I can not answer that question, I can only give you an idea because it all depends on ones choice and interests. Anal can be fun if done correctly and if you like it. On the other hand, it is the complete opposite of fun if it isn’t done properly because it can hurt and cause anal tearing which causes you to bleed through your anus