I have 36 front, 11 speed 11-42 rear (650b X 48mm). The person I ride with most has 34 front, 11-42 rear. No, we can't bomb downhill, but basically above 30mph we're not interested in pedaling anyway.
I've been happy with my gearing, even bikepacking in hilly VT. Your experience may vary, of course! And I'm considering 34 front, and/or 11-46 rear, on future hilly bikepacking to have a little more flexibility.