I no longer care about Logitech mouses after I had THREE premium mouses, in succession, to die to the same problem for me personally and additionally one mouse for a person that I recommended it to. All had exactly the same problem -- double clicks registered when clicking left mouse button.
I had to replace the switches in my G100s after a few years, first the scroll wheel button and then the left click. Definitely an unacceptable level of longevity.
IMO it's an inevitable result of using mechanical switches. I love Logitech mice but I'll usually get n-1 versions that go for cheaper, so replacing every 1-2 years doesn't sting as much.
FWIW Razer has a new mouse that uses optical switches (Razer Viper). It'll be interesting to see if how their switches hold up a year or two from now. I've heard similar complaints about mouse switch failures with Razer mice as well, so it's great to see them attempt to address the problem.
For a premium brand I find it completely unacceptable. Even though it is possible to fix the problem (https://www.instructables.com/id/Repair-mouse-with-double-cl...), I gave up on Logitech mouses completely.