I know three male ILEs really well, two less well, and two more almost not at all, and I absolutely agree with you.
I asked the three guys I know well when they are going to get married (they are about 40) and they say "I'll settle down when I'm worn out. Maybe when I'm fifty." But they basically mean "never". And "when they are worn out"? WTF?
Two guys married IEIs, and one married an IEE, and all of their marriages imploded when the kids were early teens. As far as I can tell, the problem was that the wife was paying more attention to the real kids than the kid she married. Or that the guy was self-centered and irresponsible with kids.
One guy married a Dual and they seem OK, although she works and he plays around the house, again like a little kid. A lot of the success of that marriage depends on the SEI being super-caregiverish.
The last guy seems almost SLE-like and has a good job on a military base and he says he thanks god every day that he's married to a great woman. I haven't met her. His is the only marriage or relationship which seems like it's between two mature adults. He's also incredibly good-looking, like many SLEs, but he still has Ne rather than Ni.
But @
Poptart, I also know fifteen LIIs, all but one married, and I think there's only one in the group with children. Actually, with one child, and that kid has autism.