Breastfeeding to Formula.. did you regret changing? or not?

I'm exclusively breastfeeding my 9 week old baby. I've said from the beginning I would try feed him for at least 3 months, my doctor pursuaded me to do the minimum of 4 months so I have decided to do that. I'm just worried if I decide to introduce formula, I will regret it. Few reasons why I plan on formula feeding, so the hubby can do some night feeds, I can go for longer days out & not worry about expressing(because my breasts are too full) or finding somewhere to breast feed him, be more comfy at night. I'm worried I will miss the feeling of him feeding on me.. has anyone regretted changing? Or not regretted?