Like most people I want this pandemic to end but the data on mutations and their effect vs these vaccines is not known yet. Pfizer say they have tested their vaccine against the mutations and it seems to work. Have not seen their data yet.
Whatever happens the effects of this pandemic will remain for a lot longer even after its gone.
Yes and that is why the quicker that the vulnerable are vaccinated the quicker that the economy and society can potentially be opened up.
As to mutations, well you can only hope that the current vaccines are effective against them.
The interesting thing about the new mRNA tech is that they can apparently be tweaked in just 6 weeks to also work against a mutation that gets past the current vaccines.