Well thats generally my thought I enjoy fishing. the fight is going to happen no matter what, I see no reason why people go for lighter gear, the mortality rate of fish is greatly increased, the longer the fish is out of water, the price is very high. While studies aren't necessarily updated, they don't need to be. mortality rate is pretty crappy. Doesn't matter the hook size, shape, color or if it sings frank sinatra to the fish, thats never going to change.
On the other hand, I do think line size can spook fish, and for good reason. I'd like to do better when I do chuck lures/wool or my new fav the bingo bugs.
My rods a 10'6'' Shimano Convergence it recommends 12-25lb. Because I used it to mooch and troll a lot out in the sound and past iona beach. I always used to heavier line, mostly the 25lb.
I don't know if its just me but I feel like its actually a hindrance out on the small rivers. I fish for salmon and steelhead, generally chum is my go to fish. I to try to fish for Chinook or Coho when I can.
I am thinking I will stick to around a 15lb mainline and just sit around 8-10lbs for leader. I think that should cover all the bases and still leave me with some strength to hurry a fish in.