Well in 5 years I expect most dev work will be done in VR collaboratively with remote teams, w multiple virtual screens and AI assistance. Another world. Laptops and cell phones will be gathering dust with the desktops. Things change fast. Remember the world without the iPhone? That was 16 years ago. So when you talk about using a 5 year old laptop to save a few dollars it just doesn’t make sense. You can listen to music on a CD player, sounds great, doesn’t make sense. Using a heavy hot i7 MBP w 6 hours battery life from 2017 also doesn’t make sense, to save what $1200 rather than buying a 15 inch MBA. Not today - this machine is your everything. Spend some money already