You are married to my husband....
We started remodelling the attic in December. We hired someone to come and do the drywall because we knew that we wouldn't be able to do a very good job at it. I
painted it the next weekend. It is still waiting for the electrical to be hoooked up, lights installed, railings, baseboards, a new shelf for the tv, touch up paint (that I can do but not until the rest is done!) And that's just the attic. It will probably get done the last weekend in April because my mom is coming the week after.
There are no baseboards in my bathroom, there are no transition strips between any of my rooms (except the bathroom/hall, go figure), there is no kickboard attached under my kitchen cupboard (there is one laying there that ALMOST fits, but needs to be trimmed, maybe I'll do that today). The stairs are half-sanded and need to be finished so I can clear-coat them. And the list goes ON and ON and ON; and then there's the yard.
I realize that my husband is busy, so am I, but I am still irked that we don't get these projects finished in a timely fashion. The kickboard in the kitchen has been laying like that for 3 years now.
I do a LOT of stuff around here myself. I worked as a plumber for two years so I do all the plumbing (kinda hard to not finish those jobs!) and am fairly handy so I do a lot of other stuff myself. I am quite capable of doing some of the things that are undone but I don''t have the time most of the time. HE doesn't have the motivation. He doesn't have to look at it all day long.
So, in short, yes, do it yourself. Do you have a right to be annoyed, yes. An important life-skill is follow-through. Maybe put it in terms like that, that you are concerned that you are teaching your children that they don't have to follow through on things that they start.
ETA: I used this as incentive, the kickboard under my kitchen cupboard is now installed. (and yes, I did it myself) Also, wanted to mention that I TRY to think about all the odds and ends that DH DOES do... like his obsession with emptying the canister on our Dyson, changing the oil in the cars... etc.