The 41-year old is currently deputising for the injured Alan Mannus, and was the star of the show as Saints bounced back from a 4-0 drubbing against Dundee United to record a welcome clean sheet.
The player-coach said: "I enjoy my football, that's why I'm still doing it. If I didn't enjoy it, I'd have given up a long time ago. It's hard at my age, working and training every day - you get a few aches and pains.
"As long as I can carry on doing what I've done today (Saturday), hopefully I can keep playing. After last week I did wonder whether I should hang my gloves up, but having a run of games has given me an appetite for it. It's been around five years since I last got a run of games."
Banks had a hectic afternoon, and made one exceptional save to deny Niall McGinn.
"It was fairly busy," he added.
"It's good to get a clean sheet after conceding four last week. We wanted to go back to being a side who are hard to beat, and let the attacking boys go and do their thing.
"I think it went really well. We had a few chances first half, though Aberdeen came at us a bit more in the second."