Fishing for different species of fish is not only satisfying, but also rewarding. If you've spent most of your life fishing for bass, and you get serious about perch fishing you'll find many unexpected benefits. The same principle applies to countless other fish species.
I began targeting perch on Seneca Lake back around 1986 or 87 with my friend Terry. By using light line and light tackle we had to focus hard on what we were doing, especially when it was windy and/or cold outside. We'd routinely catch pike, pickerel, smallmouth bass and even lake and brown trout while perch fishing. So targeting perch helped me learn a lot about other fish species and their habits.
I learned more about vertical fishing for smallmouth bass while targeting lake trout, than I ever did vertically fishing for bass. Everything from interpreting electronics, to fishing for suspended fish. Day to day location of bass and how weather elements changed "the bite" were other crucial elements I picked up.
If you get the chance, don't turn down the opportunity to fish for a different species of fish than you're used to targeting!
Cross-pollination also applies to different waterways. It's easy to get into a rut if you fish the same lake all the time. I've found that by fishing different lakes, I can take knowledge I gained from one waterbody and apply it to another.