I'm going to take sick leave on my last two days of work.
Why would you take sick leave on your last two days?
I hate this job and I don't want to be there for the last two days.
I know you're frustrated with your job, but you should be there for your last two days. You have projects to complete and instructions to pass on to your co-workers. You have to be responsible and honor your work commitments.
I don't care, I'm not going in for my last two days.
You don't want to burn any bridges at your previous employer because you never know when you might need a reference. They're counting on you to finish your work and leave it in an organized way for the next person that takes your job.