Nostalgia or Feelin' Old, Not Sure

So, we've had a Nintendo Wii for almost two years now and I just recently got around to hooking it up to the Internet (It's not my Wii, it's my mom's and it's in her TV room). Well, I found out that you can download Classic Nintendo games, like things for the Original Nintendo Entertainment System (with the cartridges), Super Nintendo and Nintendo 64. So I went on and bought the original Super Mario Brothers from NES and Super Mario Brothers 3 and was taken back to being a kid again. Compared with Wii, the Old School games were very flat and kind of dorky, but it was so fun. Not sure if I'm feeling nostalgia or feeling old, but I had a lot of fun.