The wording of your question has a negative feel about it, so I wonder why you bought one in the first place!
Having said that, we have two of them - a smallish one, which is ideal for two or three person households - I regularly use mine for curries, stews and the like - the advantage of them is that once you have prepared the ingredients correctly, you can just leave the cooker to get on with it without constantly having to check.
The other one that we have was a mistaken impulse purchase- far too large a capacity (6 litres ), for day to day use so it only get used once in a blue moon when there are enough people that need feeding, the point being that you need to fill the cooking pot to at least half full each time you use it. It sits in a cupboard for most of the year.
Keeping it company in the cupboard is my pressure cooker (not been used since a friend's exploded with spectacular results when she was cooking beetroot). I have a few such ill-judged purchases taking up too much storage space. I don't like throwing away something that is in working order but that probably wouldn't be of use to anyone I know. - A car boot sale may be the answer? But that involves getting up really early and I can't be bothered to. Some friends put up items for free on Gumtree but were put off by having to wait in for people who responded to their posting but who didn't turn up.