I loved X/X-2's ending(s)...although I think the real ending should be X-2's 'perfect' ending.
Next would be VIII's followed closely by VI's
...Dappa - I have no friggin clue how Red XIII had kids - maybe he evolved and became an it. = \ But I know I've been asking that same damned question since I saw the ending. =P
SPOILERS-----------------
I always wondered (until I saw VII: AC) IF anyone survived...just because of all the questionability of whether or not the human race was 'good' for the planet...ya know - and you don't see anyone else except Red XIII and his/its kids in the end either...so
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Fight, if there is something to fight for.
Never give in, or give up - but ALWAYS give.
Choose your battles wisely.
You only get one shot at life. Follow your heart.