It really depends on what you use your laptop for. My 2013 MBP lasted 9 years and was how I got my work done. That comes out to 76¢ per day, and I make a fair bit more than that per hour.
But if you’re looking for a personal computer to surf the internet, yes, that could be cost prohibitive. But then it also matters less what device you buy.
As for ports, I’ve never needed a dongle on the 2013 model. I did need one for a USB A drive on the newest model, but this little thing has solved that problem easily. I didn’t even have to buy that since my monitor has USB A ports – I was just too lazy to reach around the back to use it every time. I’m not sure I understand all the complaints about the occasional need for a dongle.