Except that a mild case of coronavirus is not the same thing as a cold. One problem is that this thing is unpredictable, so a mild case can change into a serious and then critical case with little warning if it moves into your lungs. The other problem is that even if your case is not serious, you could pass it on to someone who is vulnerable and kill them. That doesn't happen with a normal cold.
I've had a cold for the past week. At one point it involved a relatively high fever, which is not normal. I was commuting into NYC at the time, and the fact that we basically have no idea how bad the situation in the city is right now is pretty chilling. I probably don't have it, but I have no way to find out for sure, which is really not fun. We need full testing just to know who should and shouldn't be quarantined, since right now if you're actually in an outbreak hot zone, anytime anyone sneezes, people start panicking. I'm staying home sick until we at least know what's going on, since the alternative is effectively psychological warfare. I do not do this for normal colds.