'ideally, a couple should bring the best out of each other and be able to grow together',
this is very very different point than what you originally said about ' complementary '
i was much more interested in the complementary argument
if this is your point, then you need to show what exactly are you adding, or what exactly is missing from my points:
https://www.reddit.com/r/Advice/comments/b159e6/any_specific_advice_on_marriage_family_thanks/
and why it is needed
'but that's hard to achieve if you have too similar values. '
this is a different claim, but this doesnt matter yet until you show the first part
you need to show what is 'best' in 'bring the best' and how my points cannot lead to that
do you even know what is 'best' to you? i dont think that you do cos that's actually a very very difficult question, and i've already thought about it so i know it's a hard question
and at the end i would need to agree with that view of 'best' in a relationship
then we're done