I think I would draw a lot of Pokemon. Maybe I would take a stroll by the sea and sit down with my Oshawott by my side and draw him on my sketchbook... I'd just live my normal life, as I am right now, but I'd have lots of Pokemon with me, keep them as pets, upload pictures of them on my site, write about them, watch videos and read about them...
I wouldn't be a trainer, I'd be far too scared to engage in any battles. I mean, in real life, my dog is pretty lazy - maybe my Pokemon would be the same, hehe. I would take them with me on long walks through the city
If I did have a team, I feel like I probably wouldn't have my favourite Pokemon like Magnemite or Reuniclus. I think my team (team? Can someone who isn't a Pokemon trainer have a 'team'?) would be Buizel and Oshawott, cuz I love otters so much, Dachsbun cuz dog... I'd have an Eeveelution, maybe Flareon or Vaporeon. Probably Vaporeon. I'd have a lot of water types because I live near the river and the ocean.
I can imagine I would also have lots of stuffed animals and T-shirts, stickers, whatever of cute Pokemon.