Erae,
First, I'm sorry to hear about you feeling down lately. I hope you are able to make the best of it and enjoy the upswing when the time is right.
Regarding kids, it sounds like, although you can appreciate the positives and sometimes feel interested in having kids, you don't have a strong and consistent desire for children. So my thoughts is: don't have them. And your spouse has already said he'll be ok with that, so all the bases seem covered.
I will say that most of the negatives you have listed (things like the stress about taking responsibility for the household and child) I do not consider deal-breakers or even near deal-breakers. I think of those kind of difficulties can be overcome... and even more easily in your case where, as you have noticed, you can hire out a lot of the labor.
Nevertheless, having a kid will probably take more time and energy than anything else in your life, ever, even if you were splitting the effort 50-50, and there's no going back once you're a parent. So... no. I think you should focus your energies elsewhere, on things you REALLY want to do and not just, on a good day, think would be nice.
On the off chance you and your spouse decide this turned out to be the wrong decision, there is always adoption, even after your own fertility has passed. But it seems unlikely you'll need that fallback.
(And: not that you should feel any pressure to do any nurturing, but if ever feel the need, the world needs many more devoted Aunts, neighbors, babysitters, after-school reading mentors, temporary foster parents, coaches, volunteers, godmothers, tutors, merit badge counselors, etc. )
Given how thorough and multifaceted your own appraisal of the situation was, I have no doubt you will make the best decision for you regardless of how it matches with anything we commenters come up with. Cheers!