Dev time, you say. Well let me tell you a story. I am quite into 8-bit, I like buying micros from the 80s as junk and fixing them up. Recently, my old lady and I wanted a spreadsheet to track days off, vacations and so on. I could have done it on the quad-core, 8G Mac in Excel or online with Google Docs... But I actually did it in ViewSheet on a BBC Micro.
So dev time, well the last THIRTY YEARS of dev time haven't gotten me any anything I didn't have already.