I think Omicron is dangerous as compared to first one. So, i suggest everyone to be vaccinated and take preventive measures such as Social distancing, wash hands etc.
I think that we don't need to do things like that anymore because most people nowadays have been vaccinated and our immune system is also used to this coronavirus. But yes, sometimes I wear a mask just in case, for example in places where people are crowded, because I think we also need to wear masks occasionally, especially in places where people are crowded.