MERS: @ 2,500 cases worldwide since 2012.
SARS: @ 8,400 cases worldwide at "end" of epidemic
COVID-19: @ 175,000 cases and counting so far
Yeah. Do you understand that no matter the mortality rate percentage that a smaller percentage of a poo ton more cases is a lot worse than a higher percentage of a relative handful of cases?
Sure, it may not look or feel terrible right now, but I can assure you that it has already illustrated it is more of a threat globally than the two you want to fall back on.