Plyometrics is like doing hiit cardio. Except you gain functional explosiveness, which also attacks the fast twitch fibers. You can grow from plyos. A session only lasts about 15 minutes.
I dont know about you, but i like being more explosive than the next guy. Practicing athlete or not, explosiveness is a good thing.
Have you ever heard of anabolic aerobics? Plyometrics is a perfect example.