First, you aren't going to like what I'm about to say.
In reading your post, I see that you blame an awful lot on others and not yourself. Before you hit the back button and stop reading, please know that I did a lot of this too!
Finally, I just told myself that I wanted to lose weight and I wanted to do it for me. I don't care if anyone supports me, and I stopped making excuses for not moving more. Then, I read all I could on the internet and tried all kinds of little tricks from others that were struggling with weight.
One trick I did is the cleaning house thing. I have three teenagers. I stopped yelling at them to pick up after themselves. I started picking up after them again. I know that we should teach them independance and respect, but like I said, I was doing this for me and this was just one benefit there were going to get. Not only did I start picking up after them, but I stopped stressing about the house because it was now my sole responsibility. Then, I started cleaning. Everyday when I get home, there are things out of order, things that need to be put away. Fortunately, our home has stairs and all the bedrooms are upstairs. So, I pick up Kimberly's book and walk upstairs to take it to her bookshelf. Then, I walk back downstairs and get Austin's skateboard out of the den. I take that skateboard and carry it upstairs to Austin's room. Then, it is back downstairs to pick up Jessica's sweater off the couch. I happily walk the sweater to Jessica's room and hang it in her closet. See how this has helped. I don't stress about the house, because I take responsibility to clean it up.........and I make cleaning and straigtening into real exercise.
After doing housework like this for a few weeks, I had more energy and started doing other things. First, I would actually walk the dog around the block. Then, I worked up to walk him around the block twice. I mop the floors on my hands and knews to really get an arm workout, and I dust the hardwood floors at least twice a week by putting on special dusters (socks I attached to a dust mop head) and scooting and dancing across the hardwood with my feet!
Best thing is, I don't have to use the excuse that I don't like to workout alone......because honestly, I'd rather do these silly things alone anyway!