I know there are lots of arguements about BMI etc and I don't know much about you personally but speaking for myself, I was around 196 at my heaviest. I walked to work (30 minutes there, 30 minutes back) so by no means was physically inactive, based on the govt recommendations, I was double what I should do a day to stay "healthy", yet I was border line obese .
I had to seriously cut down my eating, joined a gym, went running etc and nearly a year on I have dropped down to 167 but still need to drop more to be classified as "normal" weight. I like my food, I also like the unhealthy stuff and carbs. I know I have relaxed my diet alot recently hence why I cannot shift the last few pounds. I also know that to get to what I want to be I have to be better with my diet which makes me unhappy, hence why I have yet to do it.
Is it easy to loose weight, of course, is it easy to get to what society thinks is a "normal" weight? Not at all.