Do you use incognito websites? Why or why not

Me personally I started or I do it because one time I was helping a classmate with his computer, he couldn't enter the site we were using. So I took his computer and I was gonna write http://www.portal.somthing.com but as soon as I wrote down por- the first thing that popped up was pornhub.... I clicked enter because idk I wasn't paying attention, but there I was (am a hijabi btw.) staring at a computer where a girl was feeling herself. He looked at me, I looked at him, and slowly he took his computer back and I went back to sit on my seat silently... I mean what the man does in his free time is his own thing but.... had that been me and someone accidentally clicked on mangago on some yaoi.... uffff I wouldn't wait for god or Allah to send me to hell I would do it myself out of shame