A good rich fruit cake is awesome. The trouble is that so much of what you can buy commercially is made to a budget, like so much else. They aren't as good.
If you've got a home made fruit cake where the fruit has been soaked in brandy for many months and the cake has been allowed to mature for a few months, ideally with extra brandy added to it periodically to soak in, you can have some amazing fruit cakes. It's just that it takes a lot of time and effort to make a good one, so they aren't the kind of thing you can get commercially.