I think farting is hilarious, so I rather miss not laughing at someone else's farts.
However, the good things are: not having to eat properly, ever. Not that I always did the cooking, but there was the whole thing about sitting at the table, having a proper meal (especially when the DC were at home - I kept it going until they left, and still do it when they come back from university holidays).
Getting to choose all the furniture, decorations etc, so it's all my taste, not a compromise.
Being able to have the house cool. Ex husband used to turn the thermostat up all the bloody time. I like it at 16 degrees absolute max, and he wanted it in the 20s. It made me feel ill.
Having my own music on.
Not having to please anyone in any way whatsoever.
No snoring.
Not feeling that I should be doing "my share" of the cleaning and tidying, as I am chronically untidy and am happy to stay that way.
Going to bed as early or late as I like.
Being able to go out and see whoever I like, whenever I like (okay, I should have been able to do this anyway, blah blah, but ex h was always passive aggressive about it).
No Dressing Gown of Doom.
The list is endless, really. The only things I don't like are having to do the bins, deal with spiders, and put petrol in the car.