IMHO when and why we need flashlights/night sights vary; so I don't think there's a hard and fast answer for all of us..............................

For the last 4-5years a Streamlight AAA/100 lumin flashlight rides in my off side jeans pocket..... from pants on to pants off........ it's my most used EDC item....... followed by my 'pocket knife" ..... I've never needed my 3913 in that time period

This past year I got a M&P9......to serve as my pants off to pants on gun.......... and added a streamlight TLR-3 125 lumin light ....... for when things go bump in the night and I have to roll out of bed in gym shorts and a T-shirt.

My house has several nightlights so I'm not walking around in the dark with the gun light as my primary illumination ...... but I do have a light if needed.