External link →Opinion:
Rengar (and champs like him) instantly one-shotting you is GOOD FOR LEAGUE OF LEGENDS. The game becomes a lot more bland when every single matchup gets reduced down to "dodge the skillshot to see who's Faker"
Part of League's longevity and depth comes from the fact that it supports MULTIPLE EXTREMELY DIFFERENT WAYS TO BE GOOD AT THE GAME.
Some ways to win are tactical (dodge skill shots), some are strategic (group with team to not be murdered by alpha-lion).