I live in the city and we have DSL, 40mbps down and 5 up. The power sometimes flickers and the modem goes down and it is a pain to have to wait for it to reset itself and recognize the DSL / Internet.
I have always used a UPS, have them on all my machines. A couple of months ago , my granddaughter flopped her shoes on the ups and shorted it out. I have no idea how it did but it happened. so I went out and bout a Cyberpower 1000 aver unit and have all my important stuff (external drives, cpu, ) and now the modem. I think having an UPS is equal to also having external harddrives for data and things and cloud storage plus a kick -ass AV/Firewall as well.