My instructor went with me and did spins prior to me starting solo cross-countries, we went out and he did 2 and had me do 5, each held to 3 complete rotations, this was in a Cessna 152. He showed them to me so if it ever happened I would be able to recognize and recover from it. I never had the temptation to do them on solo flights or after I got my private, unless I had an instructor there who was comfortable with doing them in the airplane. To this day I think it was worthwhile to learn, you end up not fearing spins, but rather respecting them. I am hoping to do some aerobatic training in the near future.
I have also done spins in a Cessna 172, but spinning in a 172 is fairly difficult since you have to force it, it does not spin easily, and you get maybe 2 rotations max out of it before it becomes a spiral.
If you can find an instructor who is comforatable doing spins, try to go with them for a spin lesson. It is well worth it, just be responsible and professional about it.