Yes, but the more people that had the virus now, the fewer that can get it in the future. That's the point. Even if this virus "comes back" in the fall, there's going to be a large segment of the population immune to it. And a virus can only live and spread via a host, and there are fewer and fewer hosts. Even if some people do get sick, there will be no risk to the hospital system being overwhelmed....which is the point people need to remember. The whole reason we did the "lockdowns" was to not have a large spike hit hospitals all at once and overwhelm them. It was never about preventing sickness and death...that's always going to happen. Even after lockdowns end, people will still get sick, and people will unfortunately still die from this. But by finding out what we are right now, even with the amount of people who get this virus and don't even really get sick, its all net positives.
I'll use Wisconsin, since that's where I live. We have right now about 5,000 positive cases of this virus, with a hospitalization rate of somewhere around 15% and about 250 deaths total. Using that data, the 'death rate' is a staggering 5%. The state population is just under 6 million. If you extrapolate the New York state numbers of 14% with antibodies, that means 840,000 people in Wisconsin have had the virus. But, of course, deaths are the same. That makes the death rate for this virus here in Wisconsin 0.00029%. Now, New York and Wisconsin are different with regards to population density and such, but it shows the example of how the numbers are much less scary when you get the denominator right with regards to how many are infected.
The more of these antibody tests come back with double digits testing positive, the better.