I don't know why, but people seem to be very pessimistic when it comes to talking about the end of the pandemic. Even when vaccinations have started on a large scale and it's only a matter of time when the required number of vaccinated people to form herd immunity will be reached, many still talk like it's going to last forever.
Sure there are still risks - there are new strains of the virus that are more resistant to current vaccines, it's not entirely clear how fast does the virus mutate and how often we might need to re-vaccinate people, but the general trend so far is promising. Israel is an example country that has already vaccinated more than half of its population and is swiftly easing the pandemic restrictions. Since so many people are already inoculated with two vaccine shots there, quite reliable data about the efficiency and safety of the vaccine is available.
Furthermore, scientists seem to be positive about the prospects of vaccination despite the emerging new strains. Already existing vaccines provide protection against new covid variants, just with a lower effectiveness rate. Furthermore, they can be updated and adapted to effectively target the new strains. Why aren't we then likewise positive?
This is not to say that after vaccination we should let loose and forget all the safety measures, no, we learned the lesson, and preventive measures should be continued where necessary. Small outbreaks are likely, the need for revaccination is likely, but to say that people won't be able to come back to normal life as it was before I think is an overstatement. Safety is above all a psychological condition, let's not think ourselves into the opposite without a substantial reason.
One thing that is truly sad is the poor countries not being able to get vaccines while rich ones are swiftly vaccinating their inhabitants. But this is a part of global inequality which is another problem. Hopefully, developed countries will provide the necessary number of vaccines to developing ones.