What do you do, when you've got nothing left to do?
When the steel path essence is farmed, when those worthless silver arcanes from netracell are gotten, and when you've had your rewards from the circuit, what's something that you end up doing?
I've always been kinda bad at catching up and farming "old" stuff, but I've eventually gotten LR1, and just don't really know what to do with myself after the usual few farms.
Log in - get daily reward - log out. That's what I do at the moment, once I'm no longer burned out from the grind to LR2 I will come back and help more new tennos. Promise...
As someone who got adopted very early in my Warframe "career", and still actively plays with the person, helping new people could be quite fun. Though it's been so long that I don't remember how I even ended up getting adopted.