If you can have the vaccine and you are able to, then you should get the vaccine imo.
Allergic reaction? Then yes that's a valid excuse, or at least seek an alternative vaccine.
Asthma? That's also a valid excuse but again seek an alternative. I know an asthmatic who would take the Pfizer vaccine, but was able to take the Oxford one.
Religious reasons? Not an excuse. Saving yourself and others should take precedent.
Microchips? You can fuck right off.
Anti-vaxxers are a hindrance for us getting back to normal. And I don't mean the 'new normal' as that can sod right off too.