I mostly use my syns for cooking (and wine). I can't get on with frylite (or fryshite as my husband calls it) but find I use a lot less oil if I have it in a sprayer - although I don't have that much pan-fried anyway when doing sw - mostly just eggs and I prefer those poached.
My downfall has always been crappy convenience food - pizzas, takeaways, those microwave burgers that have probably never seen a cow, and then at the weekend I'm in the mood for cooking, over-elaborate dishes containing lots of cream, cheese and deep fried elements 😳 so no middle ground for me!
Slimming world works for me as it forces me to cook and eat a lot more 'normally'... And actually there is something really satisfying about spending half an hour cooking a relatively simple but tasty tea. Going to try and build up my repertoire of tasty, healthy meals. I think last time I wasn't brave enough with trying new things and got stuck in a bit of a rut..