Well for starters if Pokemon were real we probably wouldn't have the luxury of being given a 'starter' Pokemon. We'd probably have to buy them like we do pets.
In which case my starter would probably be Eevee or Growlithe as we have a few dogs in this house. xD I got a tortoise for my 16th birthday however, so I guess I'd have a Turtwig too.
Judging by the area I live, I wouldn't have much in the way of Pokemon selection. Tons of Wingull, Starly, Murkrow... Down at the beach would be more interesting, washed up Krabby and Clamperl maybe if I'm lucky.
In terms of what I could obtain... Okay.
Umbreon: Family pet, (we have 3 dogs but this is the newest).
Turtwig: Obtained for my 16th Birthday as a special present from my parents.
Krabby: Caught at the beach.
Clamperl: Found washed up on the beach.
Wingull: Caught near my home.
Murkrow: Caught near my home.
So when I'm older if I became a pro trainer, I'd end up with Umbreon, Torterra, Kingler, Gorebyss, Pelipper and Honchkrow.
That'd be my realistic team, if Pokemon were real.
Alot of you have teams I swear would
so not be obtainable for you in reality.