I can only speak for myself, as a player with multiple accounts and many many billions of credits, the current mining, to me at least, is a way for those behind the credit curve to catch up. I do mining, but not for the credits. I honesty do not need them, but the mining implementation is for me, the best thing they ever designed. It has depth, you have to locate, place charges correctly and the scoop the rewards. In getting those rewards to market you have to run the Elite NPC gauntlet. None of that is exactly difficult, but it adds so much to what was for me, a boring exercise in futility.
Once you have 5bn credits or so, there is nothing you cannot buy any time you feel like. So mining rewards I see as a work to get rewards implemented very well. I've been doing a mixture of mining, massacre and volley boom stuff over the break. I do them to a level of reward that is most efficient. Sure, mining right now, pays a whole lot more. But if I need to up the liquid funds, I know plenty of ways.
I think it'll all settle down once the BGS settles down.