The footballer signed a two-year deal with LA Galaxy earlier this week, rejecting "many offers" to move to clubs elsewhere in the world.
Speaking at a Google press conference, David stated that he always puts his family first and lets them have the "final answer" on his career.
"Victoria and the kids have the final answer on where we live," he said. "When you're married with children your priorities totally change.
"With the new contract, it was a decision I didn't take lightly and at 36 years old you don't expect these offers as a footballer, but America is where I thought the future was going for the game and where my family is happiest."
David added that he was excited to see the sport break new ground in the US over the next few years.
"I came to America to grow the game here and I feel I've helped do that," he said. "The game is growing and to see when I arrived there were 12 teams and now there are 19 - with stadiums being built solely for soccer. That's the exciting part and one of the reasons I wanted to stay."
> David Beckham turns down Paris football club offer
Watch David Beckham score a goal direct from a corner kick in July 2011 in LA Galaxy's 2-1 over the Chicago Fire below: