It's mostly for taste at this point, rather than safety. For a long time I used to drink right from the tap, now use a filter pitcher simply because it tastes better.
does it taste better because of temperature, aeration?
lower TDS, less chlorine smell
Far less of everything that is bigger than a water molecule.
Are you filtering your water with molecular sieves? Most water treatment doesn't work by size.
Not the person you asked, but the chlorine level is very high in my muni water so I like running it through a Britta charcoal filter. If I'm in a rush, tap is fine.