I personally don't think the 16" is that awful. Heavier than the 14"? Of course. Is it ridiculous? I really don't think so, especially if you're someone who has had larger laptops in the past.
If anything could deter me from the 16", it's the physical footprint. It's a large machine. No way about it. You have to weigh (pardon the pun), are you going to need to travel a lot, do you want to do work on a plane or in a classroom, is it going to be primarily a home machine, etc. Those are the questions I think people have to ask themselves.
I'm not saying to dismiss the weight. It's a factor. But it's really just 1.5 lbs. In the grand scheme of things, it's not a major life decision for many. Again, I think it's the footprint.
If you're a student or a very frequent traveler, you may want to stick with the 14". However, YMMV. If you're in the field and you need a bigger screen for on the move editing, maybe it's still "portable" enough for you.