Nope, not at all, from the day I got my 1st colour screen phone (Nokia 3510i) I have wanted a bigger and bigger display on my phone.
When the 1st Androids arrived I sat and waited, watched the HTC Dream, HTC Magic, HTC Hero, Samsung Galaxy (before the S) etc.. come and go, the Motorola Milestone (Moto Droid in the USA) arrived with a 3.7inch, I continued to wait and BOOM, the Sony Ericsson Xperia X10 arrived with a at that time huge 4.0inch WVGA display and I snapped it up immedietly. The GS2 then came the next year with 4.3inch, I jumped on it. Then the Note range arrived but I wasn't ready for such a leap, so the next year I got a GS3 with 4.8inch, and year after that GS4 with 5.0inch, but after seeing and using the Note 3, I am now ready to make another major leap, and will be jumping on the Note 4, heading toward 6inch.
The bigger these displays get, the more I do on my Smartphone, with my GS4 I've begun watching a lot of Movies and Series, and I have saved some of them solely for when I get my next phone (Note 4), to enjoy them on a huge +5.7inch 2K display, can't wait!
The Sony Xperia Z Ultra is probably what I'll consider too far.