Foster made the decision originally to spend more time with his family, and he maintains he was right in doing so.
"Football is second to my family, without a doubt," said the 29-year-old.
"If people criticise me for wanting to spend time with my family rather than go away with England then that is fine. But my kids have grown up a bit now and have started school.
"And that's a huge thing for me. The reason I retired was partly down to family and partly down to a few injury niggles I had at the time which have now cleared up.
"You don't want to regret something. My kids are a huge part of my life and it would be lovely to show them a few DVDs and caps when they are older.
"There is the World Cup next year and I would love to go to that because I've not been to a major tournament."