That is a loaded question! It varies wildly from person to person depending on a miriad of factors.
I have posted just about everything that happened with mine in the thread called My Hemorrhoidectomy Story.
It wasn't as awful as I thought it would be. But most men who I've read posts from have had a more difficult time than I had. Then again, I've had 2 babies with stitches and all including the hemorrhoids during labor that I have something more painful to compare this to.
Please let me know if you have any specific questions. I'll do my best to answer as truthfully as you want me to be!