I should clarify, I mean specifically the MGS4-esque fistfight with Higgs, I loved that. The previous fight with him on the beach and the one before with the giant BT monster were pretty average.Mostly my experience (except Higgs which I didn't like). Congrats on finishing and having a good time, you'll feel depressed from now on.
Also, the "final boss" against the big BT whale was so lame. Kojima bosses used to be so fun and creative, but I feel like since Peace Walker they've mostly all turned into "shoot at this giant bullet sponge and occasionally avoid attacks" which is such a bummer.