As a rule, cookies will make your browsing experience better, but not always. My least favourite are those that create a session while browsing some list or another, like the planning website, but which is so transient that if you have a minor interruption you have to start from scratch, as if you were doing something really important like moving money around. Doh!
Also BEWARE of affiliate websites, like go compare and money supermarket. There are dozens like these that track you to the bank and make fat commissions off the back of sometimes less than dispassionate comparisons (they highlight offers and deals which give them the highest return). This is what the regulators should be dealing with, but they don’t.
You may prefer to disable cookies on this site and on others. But there are probably other things that you can do. Like avoid price comparison sites and other aggregator shopping channels. I have deleted my profile almost entirely on facebook, which tracks everything you do. I also use Adblock and Disconnect.me services, as well as browse the web incognito, which means my web history isn’t logged. That said, I do share most of my information with Google, who must find it hard to target ads at me! Niver mind.