I got off aircraft after 15 years, and can tell you there are lots of things out there that don't involve oil under the fingernails (unless you really like that kind of thing).
I got into system safety analysis, simply by knowing what an aircraft system was. A rigger friend of mine quit at the same time, spent a few months collecting licenses, then chucked it all in. He now does change control for IT companies.
Rather than focus on the primary technical skills, you'd be surprised how easy it is to talk up the operational environment that we all worked in.
Sure, they're not the most riveting (see what I did there?) jobs in the world, but the pay is surprisingly good, and when you get old it's nice to sit in a warm office. Oh yes, and have clean fingernails.