Why people Quitting Steemit ?

I have seen alot of abandoned accounts here in Steemit .

Now, i don't know why but it seems that after reaching a certain stage poeple starts quitting Steemit" ?

It could be my fear only and not the actual thing but thats why i m asking u guys, have u noticed something like that ?

If that's the case then why people are quitting Steemit ?

Do they don't earn good after getting senior ?

I am still very new and if that's the case then its a serious point of concern for me and people like me.

I hope that we are not putting our time in something that won't turnout to be something we are assuming it to be.