The two kids in college each have their own MBPs. I've been using a hand-me-down Chromebook in the evenings for browsing the Web, email, and Netflix. It's on its last legs and I was going to buy another sub $200 refurb Chromebook. But now I'm wondering if I should get a MBA. I was thinking about maybe doing a little development on it. (We're already an Apple family, Apple music, 5 iPhones, Mac Mini, and wife has a recent iPad). I'd def want a MBA with an i5 (i7 would be nice but overkill for me) and 8GB of RAM. Disk space not really an issue. But I'm wondering, if I drop $900 on a recent MBA, how long can I expect it to be useful? And can the RAM be expanded on them beyond 8GB after purchase? I'd seriously consider one of I think I can get 4-5 years out of it. What do you think? Thanks in advance.