[quote drainitallout]@Mumadof3 ok you may not be ready to have the vaccine now, but it's just not true that your natural immunity is superior to any vaccine. This is a new virus. Your body has no idea how to fight it. You have no idea if your body will cope well and you'll be asymptomatic/ mildly affected, or if you'll get really ill.
That's the stark reality of remaining unvaccinated I'm afraid. [/quote]
Let's break down immunity into antigen recognition, response, and immunological memory.
Recognition -
Logically, if you have had covid then your immune cells have been exposed to the entirety of the virus and thus are better able to recognise both the original strain you were exposed to as well as variants.
The vaccine exposes your immune cells to only a small part of the spike protein, hence your immune cells will be less likely to recognise variants, especially if the spike protein is what is different in those variants.
Response -
From what I have read (very few papers where this is directly compared) response (antibody production, mobilisation of immune cells) is broadly similar in covid recovered vs vaccinated individuals.
Memory/persistence -
Again, there are few papers which directly compare infection and recovery vs vaccination alone. Most recent data (again, no direct comparisons that I have found) suggest no obvious difference in T and B memory cell responses in covid recovered vs naive but vaccinated individuals.
The story is a bit clearer for antibody response. This recent paper concluded that neutralising antibodies persist for at least 14 months post infection. In contrast, there is a severe drop in neutralising antibody titre at 6 months post-vaccination, hence the booster requirement.
pubmed.ncbi.nlm.nih.gov/34899762/