Would you buy a faucet filter which can filter bacteria or even virus?

The most popular faucet filter in US (e.g. Brita, PUR) mainly use active carbon as the filtering material, which can only remove chlorine and the odor but not all the bacteria in the water. Although the tap water quality in US is very good in quality already, there still exist some bacteria and chemical which is harmful to human body. If a faucet filter can filter these harmful cyst or chemical but with a higher price, say, $40-$60, would you buy it?