It's valid if your opinion of the word "valid" is the opposite of what everyone else thinks it means.

Until recently we didn't vaccinate children under 12, we still don't vaccinate children under 5. I'm sure there are other groups of people we will never vaccinate. Therefore it's not completely bonkers to believe that you personally don't need the vaccine because you're in a very special group of people while also believing that almost everybody should get vaccinated.