I think the issue runs a lot deeper than an individual level. For instance, consider the trajectory of the COVID-19 pandemic and consequent large-scale loss of life if vaccines had been significantly delayed:
Fitting vaccine research into one year – Were animals used?
Even if I stopped using all animal-tested medical treatments tomorrow—and that's essentially impossible—my loved ones, friends, and most people around me would still owe a significant portion of their health and well-being to said treatments. One of my parents would almost certainly have passed away by now if not for insulin treatment, for example, and animal research was a core part of developing that.