It's somewhat hard for me to give an opinion on the game, considering there are so many game modes and other mods which offer different things. There is no doubt that you will find aspects about the game boring, but there will definitely be ones that you like about it.

Graphically, it's not the best, considering the majority of textures are used from Half Life 2 and CSS, so don't expect anything great in that department.

Basically, there are things you will like and things you won't like. I personally like game modes like Prop Hunt, Murder, Trouble in Terrorist Town and Death Run, but tend to dislike most of the role-playing game modes for example DarkRP. Others will have the opposite opinion. All in all, there should be something you like about it, and I think it is definitely worth giving it a shot.

garrys mod is kinda fun depends what you like tbh. i like to play deathrun, bhop or darkrp

i mainly like games like death run