I know I spend a lot more money on hunting than some do, and I also know that I don't spend a fraction of what some others do! I also used to think that I was a "frugal" hunter, that spending extra $$$ for better scopes was insane!............
Then, I had a couple of scopes fail! I got to adding up everything I spend a year on hunting! Licenses, ammo, clothes etc. Then think of the unseen $$$ that goes into hunting, traveling, scouting, building stands, clearing lanes, etc. etc. etc.
All of a sudden, a quality scope doesn't sound all that expensive!
I am not saying that you have to spend 1000+$$$ and I'm not saying that a quality scope will never break!
I am saying get the best that you can! With costs these days, that 100 dollar scope won't even cover the lens coatings and quality control costs of a good scope!

P.S.Not to mention, we owe it to the fine game that we hunt to use the best and be the best that we can reasonably be!