Now if, say, my wife wanted to handle 90% of the work, with me primarily responsible for breadwinning and little else - a 'traditional' family - I could understand making such a big decision on what looks to me as very weak reasoning. Because then it wouldn't even be THAT big a decision to me anymore, as MY life would not be changing all that much.
But assuming a true 50/50 split in responsibilities? And wife feeling the same about all these things as I do? To me, much much stronger reasons are required than what motivated you, as you would be changing your life completely, with no going back, committing for a very long time. Not to mention the HUGE financial commitment (say goodbye to financial independence and therefore being able to do independent research/projects in the future). And that's the best case scenario of healthy, not-too-unreasonable children.