In general, I am cautious of running my own open source thing without being an expert in the relevant area (or interested in becoming one) -- having to put something together (and maintain it) yourself seldom, in my experience, ends up _more_ secure or _more_ maintainable, when you don't know what you're doing.
However, routers may be an exception. Apparently the industry has basically no business motivation to keep consumer-grade networking hardware secure, at all. Irrelevant to their profits or reputation.
I'll consider it. When I bought my router I intentionally got one that can run OpenWRT, but never ended up installing it, cause, who's got time for that? But perhaps there isn't really an alternative, unless you want a bot-net-ed router. Which honestly, and with shame, I'd just ignore the botnet sending out spam to other people if I didn't think it was compromising the functionality (and security) of my router for me. Last thing I wanna do is spend time becoming a network engineer after a day of getting paid to write software, but i guess that's where we're at.
(Oh crap, I just realized it could be my DSL modem instead of or in addition to my (wired and wifi) router. I know even LESS about that thing. I think none of these consumer products, owned by people who know a lot less than me, are ever gonna be protected, if even I am intimidated by trying to figure it out).