iPhone 6 Life Expectancy

Hello!

I have a iPhone 6, bought when it came out.

Yeah, it has battery problems because it drains so fast, and some apps that I would like to use are no more supported BUT I still think this is the best iPhone ever, THANK YOU APPLE!

Well then, aside from this...

I would like to make a question, a particular question, hypothetically speaking!

So, my iDevice has more or less 6 years of intense using. But now, there is one thing that scares me: is there a chance that the iPhone one day shuts down and never turn on again? I mean, this can be a stupid question because all machines have the same destiny, but... is there a high chance OR this “Shut down forever” problem can come only 10 years or so?

I use the iPhone a lot during the day, I even play, and it goes overheating, but my sessions don’t last more than 2-3 hours (in total during a day, but not all together). I normally charge it 3 times.

Keep in mind that I have been using this iPhone in this way for all those years.

So, my question is: always hypothetically speaking, how many years do you think my iPhone will last with this usage?