It didn't improve my life in any way.
The instant I asked and answered that a few times, I started cutting down my usage dramatically.
By no means I want to defend current social media fads (never had instagram/snapchat, removed facebook from phone 2 years ago), but that's not how humans work.
You don't go for a beer with a friend to gain something, you go to enjoy it/him/her, have a social interaction and overall great time, and level of friendship usually just stays the same. Nothing learned and no career progress is still a perfectly fine result. Same can be said about going for movies or billions of other activities that don't move you anywhere else in life, they just help you wind down.
The problem is, these social media with all of their unrealistic perspectives of real life don't help us, they frustrate us. Sad thing is, they are somehow mentally addictive and too easy to reach.
This is a hard lesson to learn, especially if you were good at school growing up. I find it helpful to, after/while hanging out with friends or walking in the park, make a conscious effort to reflect on and appreciate the feeling of fulfillment that comes from it. There's something healthiness-reenforcing for me about looking around, breathing deeply, and saying 'this is nice'
Just because there is 'nothing learned' or something doesn't seem beneficial, does not mean it did not have benefits that often can't be labeled.
Also there's no goal to life, just a reminder. There's no like progress bar you fill up to 100% and then you win. You don't have to stay 'productive'.