It's the tail wagging the dog though. When you're playing live music with real folks (minus tracks) you're establishing the tempo & the groove. I've always found it hard to play to something that's already there sans a click, because if I speed up even a little, I'm not with it anymore.
But that's kind of the point - training our ears to be able to play "with" other players. And IMO this is just a theoretical exercise, but an essential skill.
Sure most gigs are about us laying down for others to follow. But even with that, being able to make small adjustments based on what others are playing is fundamental to making music groove. As we are playing with better and better players, those players are looking for a drummer that is solid, but at the same time doesn't ignore them either.
And in my experience, many gigs require being able to adjust and modify our time, in a sense, follow, some one else lead. I can't say how many singers and/or band leaders that know exactly where they want the tempo placed - even when or if that tempo might be different than the night before or what we usually do. Some can be "Watch me" - but others just demand listening to them.
I had opportunity to sub for Bernie Dressel on a Brian Setzer gig (back when he was doing the Orchestra thing) and the main thing Bernie told me was... "Be sure to really listen to Brian's guitar - he knows - and plays it - exactly where he wants it - so lock in with him and it will all fall into place". On most other, large big band type gigs, worrying about locking in with the guitar player wouldn't be my first thought. But this was Brian's band, he knows what he wants, and is a super solid player - more than capable of laying it down, so to speak. So that's what I did... kept my eyes on the charts, catching all the horn and arrangement stuff, but with my ears firmly locked into what Brian was playing.
In a nutshell - actual music, what we sit down and listen to.... what our audience listens to doesn't include a click. So again my advice, learn to play with music, practice playing music that's locked into a tempo - and music that floats all over the place. Learn how to stay locked with something that is varying.... popular music hasn't always been locked to a grid.... And I'm not saying we'll be going back to the past - just that tempo variances in popular music have been around for centuries - and it is only in the past 30 years that we've abandoned using them. Nothing stays the same forever. Plus there's still lots of music and lots of gigging situations that demand the ability to be fluid when necessary.
Anyway - my 2 cents...