The 26-year-old, who made his debut for the side in 2005, has spent his entire career as a Villa player, with brief spells on loan at Watford and Sheffield Wednesday.
Agbonlahor told reporters: "Do I regret being a one-club player? I think, for me, I have always enjoyed playing my football here at Villa so it's hard for me to say that.
"For me I've always enjoyed playing my football, maybe other than the one season where I wasn't playing as much as I wanted to, which was disappointing. Apart from that, I have enjoyed my football and when that is the case you have no reason to look elsewhere.
"If that changed, then you would have to obviously look elsewhere. But if I'm in the team and enjoying my football, there is no reason to do that.
Villa face Manchester City tomorrow evening.