If anyone wondering how long g502 can last, here's mine that I bought around 2016 and still going just fine. Except those rubber pads and scroll wheel has lost some textures :
Logitech G502X Plus Review | MMORPG.com
What's the average lifespan of a computer mouse used by a gamer? - Quora
Lifespan Skin For Logitech G502 X Plus — MightySkins
Logitech G502 HERO High Performance 12 Buttons Gaming Mouse League of Legends Customized Version,16000DPI, Long Lifespan Up to 55 Million Clicks, Hero Sensor - Newegg.com