its different taste man...I really dislike this kind of stuff in movies, but MGS has a lot more going for it...snake is a well designed and charismatic character...most of all the series has fantastic set pieces and visual design.
I mean you have a BK avatar...I could ask how old you are and queery, how you might still like that sort of stuff...but I won't because I can understand how you might like that from certain perspective ( I like the jak series).
Honestly, if you are talking about cheese and cliche, by any other standard, videogames are full of it...Halo, Gears of War, Resident Evil etc.. i have slightly different tastes and perspectives when it comes to games vs books or movies....immersion, visuals, intensity changes things I suppose....
In MGS the gameplay, and visual design sell it for me...and I enjoy story heavy games