It's how you make it challenging that makes it fun. Yes, a 14 hour flight over the ocean does sound boring, but say you fly a B-17 from San Francisco to Hawaii, without using a GPS or the built in map to tell where you are. That was probably the most stressfull flight i've ever done. Thankfullly, I didn't miss the islands, and I landed with around 20 minutes of fuel left....

But since i've been growing up, I don't have time for those 10+ hour flights anymore, and if I were to do another long flight, I would still fly real time, while sitting at my computer, but It would probably take me a couple days of saving it, and continuing it on my free time.
And when I look at my logbook and see that I have X amount of hours, I can say, "It's all real time, while sitting in front of my computer". I suspect a lot of people don't mention when they say they've got so many thousands of hours logged on the flightsim if it's real time, or whatever....