Several points emerge from your post:
1. In theory, certainly it's worth doing law if you don't want to be a lawyer. For many, law is a very interesting a rewarding subject to learn about in its own right. Nor is it unusual to do law without intending, or intending not, to become a lawyer. So that shouldn't put you off.
However,
2. If you do decide to apply, consider your university options carefully. Some courses might be less suited to you. For instance, at York all the learning is structured in a way that is geared specifically towards legal practice. If legal practice is not what you are interested in, this is unlikely to be for you.
3. You sound ambivalent as to whether you really are interested in law at all. It's fine if you think some aspects are interesting but others not so much - we all have areas of law we think are less interesting - but if you're not really that enthusiastic at all, then you shouldn't do the degree.
4. You also seem averse to hard work. This is not a good start for a law degree (or, in my opinion, any degree, but you will probably fare worse with law than with some other options) either.
So in short, is it worth doing a law degree if you don't want to be a lawyer? Absolutely. The question is whether you should do a law degree.