I REALLY hope you're typing with your thumbs.
Anyway, that's a question only you can answer. Certainly as a tool of commerce, playing bass guitar as well as double bass can make pretty much every gig a viable one. and that goes for bass guitarists who are thinking about playing double bass. If you are in music because the making a living part is more important to you than the only playing music I want to play part, then it would be a smart decision to double. It would be a smarter decision to learn to play piano and sing, because then you can work as a single.
For me, I started playing bass guitar and came to double bass much later. But DB became the predominant way I heard my "voice" in the music, so I only play that now.
There's plenty of bassists on either instrument that make a living playing just that instrument. There's plenty who do it by playing both. Opt for what brings you the most joy.
"It takes a pretty great drummer to be better than no drummer" -Chet Baker
"You know, it's just one less on the train..." - me