The 32-year-old is set for World Cup duty with England in the autumn but maintains he will resist the overtures of Sale director of rugby Philippe Saint-Andre to continue beyond that.
He said: "I feel honoured and flattered that they keep asking if they can get me somehow to come back.
"It's time for me to finish but I'll still be around the club and maybe there will be a few things I'll do, but I'm not sure.
"But I haven't got any regrets. I've enjoyed every minute of it and I'm sure the club will go from strength to strength.
"In the dying seconds the crowd was elated and the boys were going bananas and I didn't know whether to laugh or cry."
Last season's Guinness Premiership champions' season has been blighted by injuries but Robinson admits there could be no more perfect finish to his career at Edgeley Park.
He added: "There's a fine line in this game and it's about taking opportunities. Thankfully in the remaining seconds one popped up.
"It looked a bit bleak towards the end and it would have left a sour taste leaving on a losing note, but the script was written and thankfully I managed to sneak in the corner."
Bath looked to be cruising to a first away league win of the season after tries from Nick Walshe and David Barnes helped them to a 23-13 lead. But Robinson fed Selorm Kuadey and then scored himself to secure victory.
Saint-Andre admits the Sharks will miss the World Cup winner's presence.
He said: "We will miss him because of the way he is on the pitch but we will miss him more for his leadership, his charisma and his professionalism.
"When he speaks people listen to him, and he doesn't need to speak a lot because when he speaks there's something about him and you want to hear what he says."