As a guy who went 110kg to 80kg, I can attest to it being easier and more fun when you don't have the equivalent of an extra sandbag wrapped around your torso. One particular thing that happened was that it just became so easy to break into a run to get somewhere it little bit quicker.

(Five years later I'm back up to 95ish, but I'm on the way down again. Remembering what it was like is a good motivator.)