Did it give you headaches?

I remember that playing the gamegear (especially Sonic) used to strain my eyes. I didn't have that problem playing Gameboy games. I don't know why, but if the battery didn't die I still needed to take a break.

I also didn't like how the screen was so small that I hardly had any warning before my character would run into things. I remember getting frustrated and eventually losing interest in the games I had while still loving playing Sonic on the Genesis.