I used to be that guy, then I had my first kid at 49 and things have been circling around the bowl since then (he is 4.5; I am... impacted)
And now I'm not sure what to do, moving forward. Government job? Find some niche in a large institution that won't fret too much if I have 2 sleep-impacted nights in a row? And then there's the current hiring economy... Who is going to hire me if I'm completely honest and admit I'm buckling under parenting pressure but really do want to help?
Barring special circumstances, kids tend to get easier to manage as they age. Being able shower, potty, sleep, etc. without assistance will take a load off your shoulder.