I did freshwater for a decade while I was in high school. It does get boring. So far, I'm almost a year into saltwater and it doesn't really give you a chance to be bored. With proper research of livestock, you can make a lively tank.
I'm currently running a 55 gal
reef set up for LPS
coral. I have a b/w occy clown, indigo dottyback, coral beauty, lawnmower blenny, and this weeks addition of a green mandarin (the real test of how my tank and i are doing imo
). These guys are pretty much on the move all the time.