I started Gaia in early 2004 and I just came back from a couple year break. I was surprised how much the economy had changed since I was last active. At first I was intimidated, because it looked like everything was impossibly expensive, but now I realize it's actually not any more difficult to attain despite the shocking numbers.
I was also surprised by how the values of my items shifted. Nitemare Minis and Angelic Sash are in the dumps. Devil Tail seems to be holding strong as ever, even though there are like a couple dozen new versions, which I thought was odd. Then a bunch of random box items and evolving items I had from years ago rival or pass the really old donation and event items I figured would have been the best long term investments. I'm not butthurt about the deflation, though. It seems like now almost nothing is unobtainable and, as someone that wants EVERY ITEM, I'm fine with that.
At 29 years old now, I mainly worry I'm too old to get back into this. I like playing dress up with my avatar, but I feel like there probably aren't many users left around my age.