Well, I love flinging quills & I love bows. So I have lighter weight fun shooting type bows that I picked up mostly to re-hab myself, (back & shoulder injury).
I also have heavier weight bows mostly for hunting bigger game (like elk). I've also drawn & held on elk in freezing cold weather, I'm in B.C.!...LOL. I can tell you that when that big bull elk is 14 yards away & you can hear him beathing & see his breathe & your hearts pounding up in your throat it's no problem pulling back a heavy weight bow! I tend to over-draw slightly in these situations & a heavy bow helps prevent me from over-drawing too much.
At my age with past injuries & the love of flinging quills, I'm not always looking for a "workout" with my heavy bows. So I'll pick up the lighter ones & go have fun, or work on form etc. & I can shoot 'em all day long.
So go forth with a dandy excuse to have more bows!