Firstly, FFVII is only fun if you like the endless mini-games...otherwise? Meh...But, as you said, that's all up to the player, I guess...
Also...Summoning GFs is all that FFVIII is about...Fight won't get you nearly as much damage (rock it, Diablo!), Magic ufcks w/your stats (& your overall number of Magics in general), and Item...well, it's just Item...Except for the final boss, you should find yourself Summoning and becoming a master at tapping that O button like a fiend w/o a fix. So, unless you're using some system that I have no idea of, mastering FFVIII's system was pretty easy, as I recall...Just Summon, Summon, Summon. Maybe you meant "If you find yourself not summoning GFs every move for every battle"?