The myth of STIs acquired in unsanitary or contaminated toilets arose almost immediately when the germ theory of disease (including STIs) was scientifically established in the mid-19th century. Stories abounded that people must have acquired an STI (almost always syphilis) from such exposures. The medical establishment promoted the idea itself, primarily because it was easier to explain to infected women that their husbands were not cheating on them -- when in fact they knew that was the truth. It was always BS and modern science has confirmed it:  there has never once been a reliable report of anyone, anywhere in the world, with any STI (and I include them all:  HIV, syphilis, gonorrhea, chlamydia, herpes, HPV and the rest) whose only possible exposure was a contaminated environment, either in a public toilet or elsewhere.

For those reasons, your experiences in the public toilet did not put you at risk for HIV or anything else.  And in response to your closing quesiton, the answer is yes:  If you had acquired HIV 8-10 years ago, almost certainly you would have been very ill by now and there's a 50% chance you would be dead.

Please don't worry at all about this. Of course you are free to be tested for HIV if you wish:  CDC advises that ALL adults be tested for HIV at least once; and you might find a negative HIV test result more reassuring than anything I can say. I'm not actually recommending testing, just saying you might want to consider it for reassurance. 

I hope these comments are helpful. Let me know if anything isn't clear.

HHH, MD

Is there a different between life in surface and infectious ness surface? I’m confused by some sites saying seconds, but there’s reports of people getting it through sex toys and razors several years back. 

I don't understand your other questions. Maybe dictated and poorly captured? What do you mean by "life surface and infectious ness surface"? Or "some sites saying seconds"? As for reports of infection via sex toys or razors, I have never heard of such a scientifically documented STI. Lots of people have made such claims online, but mostly it's BS by people who misunderstood how they were infected or were intentionally untruthful. Whatever the reasons, it was mostly BS. (Avoid sites by and for people with STIs or at risk, like Reddit!)

I have read that HIV lives outside the body for anywhere from seconds to hours. Then I hear it’s not infectious outside the body at all. 

I read a few studies where sex toys and razors (two sisters) were the only links. 

I appreciate your thoughtful response. Thank you.