For me it was like the Lynx. I did not know anyone that had one when they first came out for sale. I have always liked Sega made systems and knew it was similar to the Sega Master System in power. Guess I thought it would be a good handheld so I bought one several years ago.
I had mine from a very young age, can't remember how old I was when I got both the Lynx and the GG but I remember as a kid preferring the GG as it had Sonic and a couple people at work had them as well. Obviously both the Lynx and GG pissed all over the horrid little POS that was the Gameboy but I think the reason I didn't get into the Lynx was because for a VERY long time I only had about 3/4 games and could only get them if I went out with my dad to somewhere in London, it was after it had finished production, whereas I could still get GG games in the Future Zone/Game Store in Watford
Ultrapro on xbox live
I picked up a bargain Lynx when they were newish, and although I was a Sega nut at the time never picked up a Game Gear because I had the Lynx. It was only a few years back I started getting a few consoles and a mate mentioned he had a Game Gear with a few games he might sell, a deal was struck and I own a Game Gear with several games and a carry case to keep it all in.
This thread reminds me I need to find it in among my stuff and see what I have and if it still works. 
cool, be interested to hear what games you have 
Ultrapro on xbox live
I love my GG, I don't have a huge amount of games but those I have can be seen in my collection thread.
oh ok, I thought as you hadn't seen it in a while that maybe your collection was somewhat unknown to you lol, cool
Ultrapro on xbox live
To be fair my whole collection is so scattered your probably correct lol.