I think I might have used the expression "do want" to vaguely here. Same as you, I have very little desire to write any of those systems, and still try to avoid them as much as possible (as those endeavors usually require more time/energy, etc. and come with higher risks).

Maybe it's better put as "But sometimes all your product requirements strongly suggest that you have to build X and there isn't really a way to avoid it" (and what's available off-the-shelf doesn't fit)?