Why apple did this, why single port?

Using USB-C wasn't the problem. The real problem is - they put only one port there. You cannot charge while you are connected to an HDMI projector / external HDD or a pen-drive.

But the latest Google Chromebook "Pixel" has two USB-C ports on either sides of the device.

As all our stuff is held in the cloud - which I dislike very much - less and less stuff we want to connect to our machine. A few years back it was so annoying when they started to get rid of optical drives, but now nobody misses it. Soon we wont give a rats ass about USB as well. Especially on laptops, because on a desktop you will still need it for a few peripherals. But on a laptop where everything is built in...

My opinion is, that magsafe was awesome. I hate having everything in the cloud.

And yes, these guys will do whatever they want. Because 98% of their customer base don't give a damn and even if they do, they will still buy it, because of brand loyalty and other reasons.

I really hope Apple isn't going to make this a trend across their line, and that others don't follow suit. That said, given that they made it a "new" line, I think it may have a place. e.g. for some moderate to high percentage of people that use a laptop they rarely or never plug anything into it. And those same people are usually the ones on the go a lot, so this might really have a good fit for those people (e.g. weight savings and super thin).

For developers it is IMO a horrible fit; however, for traveling sales force it might be a decent fit, especially with so many Projectors being WiFi and more businesses now have Airplay available (this one shocked me but it is nice).

I am far from a Apple fan boy, in fact it took me a forever to purchase a Macbook pro, but I will say it has been one of the nicest pieces of hardware I have owned. That said, I also still own and love my Toshiba laptop too as it is a power house and was easy to upgrade and expand.

Well, technically you CAN do both, you just need the right adapter.

The less trend makes almost exact models looks different and their cost will vary a lot