Truly important comment:
" It would save you money and time spent installing all the cheats."
Imagine if you could finish *every single game* that comes your way, never getting stuck or fustrated.

- Money:
I never bought a trainer, and I never will, there are many free ones.

Positive, you clearly save money when you can finish *all* the games you buy.
Because you overcome glitches, unfair difficulty, or tons of respawning foes making them a chore, and get all the entertainment and not waste money on unfinishable/abandoned games.

Negative?, you may spend more money buying more games knowing you will enjoy them, but hey, YOLO.

- Time:
Trainers take only a few minutes, just to see if they work with your version.
But trainers are a limited commodity, relatively few games have trainers, some don't work with updated game versions, many offer just a few options (never Fling, but even with him you may not find a particular thing you want).
And here enters: Cheat Engine.
Make the effort of learning, use that ole brain and the possibilities are amazing.
If you don't find working tables already made- it takes from 5 or 10 up to 40 minutes (if you want to find everything and not just a couple things), which I enjoy anyway, a mental/acquired skills challenge.

*** But then, you save up to hours of a game time, and before it begins to drag, you can go to the next exciting one ***.

And this is not for you, but to any reader that gets curious on the subject.