I had an inguinal hernia repair performed back in September, at the age of 38. It didn’t hurt - I just felt things moving down there when I tensed up, and there was a visible asymmetrical bulge between my waistline and my junk. It wasn’t huge, but it was noticeable.
I had the “mesh plug” repair, or whatever it is they call it. It was done under general anesthetic on an outpatient basis. My surgery was done on a Tuesday: I showed up at the surgery center at 7:00 AM and left at about 11, I think, all stitched up. We actually stopped and had breakfast at a local restaurant while my painkiller prescription was being filled, and at that time I wasn’t having too much trouble moving around. (This was my first time under general anesthetic, and I was relieved to find that I suffered no ill effects afterwards.)
We then went home, and I didn’t leave my house until Sunday. Sitting on the couch was pain free, but moving around hurt a good deal. ZenBeam is right, that the Vicodin tends to make one constipated, and that first bowel movement was a half-hour ordeal because pushing at all was pretty painful. I eventually discovered that if I leaned way forward (as in, chest on knees), I could push pain-free. It was one of the happiest moments of the day. 
I found getting in and out of bed really hard for the first couple of days. I think I spent two of the first three nights reclined on the couch. Walking required a hand cradled in just the right way supporting things to (mostly) avoid very sharp pains.
By Saturday my feet were swollen from all of the sitting around.
I went back to work (a desk job) on Monday - gingerly. At six days after the surgery, this was two days earlier than the surgeon had proposed, but he ultimately left it up to me. Frankly, I was going bonkers and needed to start moving around again. I still had to “support” myself down there with one hand to walk pain-free, but I could discreetly do that with a hand in my pocket. By the end of the week that need had gone away.
The skin just “south” of the incision was numb (nothing important was affected), which the surgeon said was inevitable after a diagonal cut like that. He predicted that it would “probably” regain feeling over the course of several months. Sure enough, it’s been so gradual that I didn’t really notice - but full feeling is back by now.
I was told not to do any heavy lifting for two weeks, but wasn’t given any restrictions after that.
It’s now been seven months, and I still feel a little discomfort down there, but am under no restrictions and regularly lift weights at the gym.