Re: Why are people reluctant?
Why reluctant with 8.1, or with 8.0?
Apple's x.0 releases are notoriously buggy, as they are - it would seem - pushed out by a given date, whether they're ready or not. The new hardware MUST run the new software, and nobody will screw with the timeline for new hardware. Thus whatever gets released on day 1 is likely to be not fully tested, and certainly not tested across a wide enough range of environments. Then over the subsequent weeks, Apple evidently runs war rooms tracking bug reports and fixing them, and getting updates out there. 8.0.1 was just embarrassing, though 8.0.2 did fix some good stuff. 8.1 was the big jump we were waiting for as it added some of the features that they had been touting, but it's still not perfect, and people are still seeing issues. The same applies to OS X Yosemite - great update, but bug-ridden and needed more testing; early adopters once again risk paying the price.
Hesitancy isn't necessarily a bad thing. And if you don't really care for a particular new feature, why upgrade?