I think that being house makes you feel old, while traveling makes you look old. It's tough physically traveling, plus contractors usually work harder. (There are exceptions on both sides).
When I started traveling after 20+ years house I was shocked, (SHOCKED I tell you..) to see how hard the outage contractors worked. Embarrassingly, my work pace had atrophied, like an unused muscle.
We house techs thought of ourselves as just being there in case something happens. If you weren't a self starter you could be bored.
And most of the house politics/co-worker issues can be avoided by simply working backshift.