@WellErrr
This virus is evil and it kills. It doesn't discriminate based on age, everyone gets it, but the symptoms are different for all, it doesn't matter how old or healthy you are, 1 in 20 people at least will need to be hospitalised, needing oxygen.
The world is going crazy trying to stop the spread because it spreads so quickly, there is not sufficient resources to cope with the influx in hospitals and with similar treatment required.
In Italy, the hospitals are like war zones with doctors having to choose who lives and dies, families are living with their dead relatives in their homes because there aren't enough services/people to collect bodies, churches are being used as mortuaries because they are not able to bury or cremate quick enough and family's are unable to go to the funerals because of the risk of further spread. The only thing that has started to ease this situation is lockdown of all residents.
The situation in the hospitals was getting the same in Madrid and the rest of Spain started to follow, lockdown was the only thing that slowed it, it still has not stopped.
The rest of Europe started to see the same issues, so they shutdown and the U.K. is doing the same if not slightly slower.
So basically the world is going crazy and grinding to a halt to save lives and allow the basic needs of society to continue to be met without the massive death toll that was coming if it didn't.
Please read some of the news from reliable sources, try reading the lancet website to understand some of the medical findings from China, if you know anyone with friends or family in Italy or Spain talk to them and you might get a better understanding of what's happening and why.