Eh, depends - true, newer cars are better for safety. But a car from the 90's isn't exactly a model T - it fundamentally isn't that different from a new one under the hood, it'll hit the freeway at 70-80MPH nearly as well as a new one, it's perfectly reliable if maintained decently, the controls (save for fancy stereos and AC being more complicated) are the same, etc. When I drive my Civic (2005/generation ran 2001-2005), I don't exactly find myself wishing I had more gadgets in the car, or an obnoxious/smart HVAC system (I loathe those; my old simple one is rather nice and doesn't glitch like my dad's new VW one). Actually, the extras on the new ones are more of a "I can tolerate this" than a "I want this" thing.
Same goes for Office 2007 - off the top of my head, they gave Outlook a ribbon in 2010 (but she doesn't use Outlook), 2010 introduced some new wordart features (that I promptly forgot about when the novelty wore off), and 2013 introduced cloud obnoxiousness, a really annoying cursor effect, and a blinding white color scheme. Nothing that we care about (shoot, I get 365 free through my school, but I ignored it and kept my less-obnoxious copy of 2010 for the few times LO can't handle something). Yes, it won't have any security updates, but I'm more concerned about updating a web browser or OS, quite honestly (what about the loads of older unsupported software out there, whether adobe CS or a proprietary corporate app?). And Microsoft wants us to pay $100/year for that
To put it another way - it's a tool to do a job, and that job has not changed *at all* (she's writing reports for work), not one bit, since we bought that copy of Office. It's a piece of software, not a physical thing, and the file format hasn't changed either, so it isn't exactly falling apart. People on budgets tend to not replace old cars if they're still running well, after all.