> As a young healthy person

I personally worked with a "a young healthy person" with your attitude. He's dead now. This is not your average cold we're dealing with.

Most vaccine boosters are spaced out 6+ months, but the emergency nature of the pandemic forced the trials to only space them out 3-4 weeks. All of the data is showing that a 6-8 month booster will offer a more robust protection. Further more, a delta or any specific tailored booster is trivial with mRNA tech.