Don't feel like the Lone Ranger, MsCoconut!
No one here will tell you you're an idiot, 'cause it happens to all of us this way. Seems like the closer we get to goal, the harder it is to stay the course. I've never reached the goal I set out for a number of years ago when I started to lose 100 pounds. Now I've gained 20-plus and am making a new thrust towards that elusive (but realistic) goal of 135.
You've haven't mentioned your exact loss, but sounds like you've made great progress and shouldn't be feeling bad. The binges and lack of motivation are part of the process of healthy weight loss. Your body is telling you it's missing the fun ol' way life used to be and your spirit is rebelling against any further restrictions. A binge now and then can actually help your metabolism and everyone needs to rest from working out. At a certain point, you WILL find the motivation.
I usually post on the 5-pound challenge and 21-day challenge threads, which have mostly the same group on both. Come join us there or hop on any of the great threads on this board and you'll find lots of support. It really helps to post sometimes! Good luck wherever your journey takes you!