While we obviously make more on .com's, OF COURSE .work domains rock! Instead of trying to make thousands of times our $$ back, we're thrilled to make between 20 and 1,000x what we paid. Plus, in our first 2 yrs delving into .work domains, we find that more than a third of our buyers ... are repeat buyers, because they appreciate paying only a couple of hundred for most of them.
2) 3L.work on a business card or resume or advertisement? Puh-leeze, that's also delicious because it follows a critical rule of any business url: MUST BE UNDERSTOOD by everyone who hears it on the phone or radio, right? "Hey, check out my site at 3L.work!" lol: No way to misunderstand it.
3) All .com's are gone, or insanely priced. Every month that goes by, .work domains continue rising on search engines. Shortcuts.work ranks high on google for more than one keyphrase. Lasers.work is no more than a pdf, but directly generates sales for supercharged lasers. Please do NOT allow naysayers to slow you down.
4) Bottom line: Whatever gets YOU most excited is what you're most likely to get other people excited by. We have a few dozen 2-character and 3-character .work domains, such as 14k and 1l, and are confident they'll be profitable.
... as long as we remember that l.u.c.k. is acronymic for Laboring Under Correct Knowledge. Cheers!