I started cheating in a lot of Free2Play-Games where no real risk was involved. I then started to cheat in TF2 and got really intrigued by the unusual features of the cheats. This took me deeper down the rabbit hole, making me more interested in how such stuff could be achieved instead of cheating with it.

Today I mainly use cheats in games like COD where I like to offset the awful visibility issues these games have. It helps me relax as I do not have to focus really hard to spot enemies / have to expect enemies at every gray spot or if that tiny pixel that looks like an object is an enemy or not. My main focus while playing changed from "is that an enemy?" to "where could an enemy at this point of the match be?", therefor analysing matches and playstyles more.
It also helps me play fast in COD because I can easily spot the lame campers that sit in a corner for the entirety of the match and have an equal chance against them with my pistol / any non-meta weapon.

I only use aimbot in COD as almost non-existant aim-assist to equalize the chances against console players in direct confrontation, as the aim-assist of consoles got extremely strong in the current COD games.

TL;DR: I mainly use cheats as a way to relax and have fun.