I too was in the same boat. It's hard for me to justify spending that much money and adding the weight to the bike. I have the X-Fuxion HiLo (not too many choices with the 27.2 size). The X-Fusion is a little more then a pound heavier then the KCNC that it replaced.
I agree, it's easy enough to stop, lower the seat and then get back on the bike. Or.......if you ride in an area that doesn't require you to lower the seat often, it makes sense. I used to say that I don't lower my seat too often and it's not much of an issue to stop when I need to to lower the seat.
Then....I went on this year's mountain bike trip to BC Canada. A friend had a spare Gravity Dropper seatpost so I put it on my bike and tried it. At first it was a bit awkward remembering to lower my seatpost (just to try it in stuff). I found that it wasn't as though I couldn't ride the stuff or it was really that difficult, I found that it just made the experience more fun. Sort of the idea of riding a bike with suspension. We don't need it, it adds weight and complexity to the bike. In the end, it just makes the riding that much more fun. I've now found that I can be riding along and just lower (or raise) the saddle for things without thinking too much because the quick change allows the riding to just happen quicker.
So going back to your querry. Yes, I was in the same boat as you with the same issues. I moved over to the dark side and enjoy the change. It took a "borrow" from a friend to see the benefits. I suggest you do the same. See if there's someone you can borrow one from for a period. In the end, you may or may not decide it is worth it. Like I said above, I personally am able to ride everything I come up to here without having to lower my saddle. However, it sure does make the experience more fun and easier. Good luck with the decision.