Guys: Ever regret mistreating an ex girlfriend?

Shes very supportive of you in all aspects, emotionally, financially, etc. Who listens to you, respects you, comforts you and makes you feel like a king... Shes loyal and faithful and not jealous... Doesnt get mad when your out with the guys, Takes you to nice restaurants, sporting events and sends your mom flowers to her work at every single occassion. She cooks for you cleans for you and washes your clothes and folds them and puts them away. Would you regret losing someone like this??