No. If they allow me to use their resources for personal use, then I would expect the information transmitted over their wires to be treated with the same respect I am expected to display for their data.
You might be looking at it from a narrow perspective of "their stuff, their rules", but unfortunately, that just doesn't hold water any more. If the resources are denied to me, that's just fine, it might be a pain in the arse, but I can deal with it. However, if I'm allowed access to the resources, then the very nature of the allegedly (tin hat anyone?) democratic, freedom loving society the western world purports to encourage demands that my privacy be respected.
Might sound ridiculous bringing 'democracy' and 'rights' into an argument like this, but there is such a thing as the thin end of the wedge. If you allow small nibbles to be taken from your freedom (I won't say 'rights', because it's beeen used and abused by fat people demanding hot hamburgers) then it will eventually escalate till the concept of freedom becomes no more than a farce.
The argument someone will pull in relation to the statement above is "difference between government and private enterprise", to which I call a big hearty bullshit. Government is 'allegedly' (that word again, tin hats?) supposed to represent the people and their desires. Since when in the blue fuck have private enterprises superceded government? Government is supposed to facilitate the functioning of private enterprise within the framework of a society. By 'framework' I mean 'laws'. If you have allowed private enterprise to twist the concept of societal rules to the point where citizens are denied basic protections to their privacy, then you have bigger things to worry about than HTTPS snooping.
Yeah I am a bit disgruntled by this argument. Look around a bit and you will see your personal space is being subtly chipped away by corrupt governments, avaricious private enterprise and useless sheep who pull the "nothing to hide, nothing to fear" argument. It's bullshit. So, in answer to the original Ask Slashdot, yes it is worth leaving a job over. It's worth climbing the highest tower and screaming your outrage over it. If you continue to just look at it and think "Doesn't affect me, but interesting technique" then you are contributing to the gradual erosion of society.
Something to think about, the US Constitution is a beautiful document. Some things in there I like, some things I don't, but on the whole, it lays down the basic premise for a nation and society which considers independant thinking and the ability to disagree with your government to be as important and necessary as the basic human needs for food and water. Want to see how that has been twisted?
http://en.wikipedia.org/wiki/File:First_amendment_zone1.jpg