Clean air and breathing healthy oxygen instead of air pollution became a "must" in today's life.
Especially when you are going through countries and cities with "high production" volumes and have income based on "industrial" things, this makes there a part of "pollution" area which is polluting environment and damaging health of people around where they are located.
Today, breathing a clean air became something "luxury" overall, especially in many Asian countries.
In this case, even we do not see or feel. The pollution is an ongoing issue and it should be considered as "critical" and get into action depend on it. Cause health doesn't accept excuses or mistakes.
Until I bought one, I have never understood lack of it cause I had no idea if I require something like this or not but starting from I launch the Purifier, I have understood it was something missing for me, especially while I am staying around Asia with "very high rate" of air pollution.
So, if you are in a doubt to buy Air Purifier, my recommendation is just go for it. It is something that makes feel like you are in forest with oxygen and %100 sure the right Air Purifiers are providing real life, and breathing quality.