Honestly I’ve only been on one long haul route, but there are still opportunities to enjoy the flight.
The only LH flight I’ve been on is JFK-GYE (South America) and back. The benefit of the route is that it’s an overnight flight. Obviously you might think that I might sleep through the 6 hour journey but that’s a no. When I last flew this, the flight did seem longer than expected, so in order to compensate for this issue, I watched some movies and stayed up till like 4AM. I enjoyed this flight because of the service onboard and hospitality, so thanks LATAM.
It really just depends on the airline and aircraft. If an airline offers subpar long haul services, then the flight could just be boring. However, if an airline offers a wide selection of movies, great meals, and adequate amenities, then you’re in for a treat. Aircraft is also another factor. If you’re flying a LH on an A380, you’re probably going to have a comfy flight whereas if you fly in a cramped 737 MAX on a LH, you might just feel a little claustrophobic.
Overall, it’s your preference. You might or might not know what to expect from a LH flight. Sure it may be an endless flight, but if you take advantage of the amenities, products, and services, then you could have a blast onboard. :)