Do it! If for no other reason, my basic philosophy: "For free, take; for buy, waste time."
Personal experience: I made two jumps back in 1978. I made two just to see if the second was as uncomfortable as the first; it was, possibly more so. But those were static jumps and not tandems.
After it was all over I'm glad I did it. But them, I was glad I attended boot camp too, after I had completed it and went to the fleet!
Some folks love it. If you're an adrenaline junky you'll probably have found a new way to spend money. If you're more like me, it'll be like marrying that pole dancer you shove X dollars into her whatever; you'll be proud that you did it but it's nothing you'd ever care to do again.