I dont like BitCoin for these reasons:

1. The whole idea that someone can turn on his computer/GPU and "bit mine" and earn money is ridiculous.
People should earn money when they work hard for it. Turning on a computer and leaving it to run does not and should not count.
This is a waste of electricity as well and therefore it causes greenhouse gases and has a carbon footprint.

2. One would think they came up with a new currency system so theft could be prevented. No, BC gets stolen all the time.
Why couldn't they "disable" the serial numbers of the currency that was stolen? Thats the kind of system that should have been designed.

3. BC is unstable. People lost a lot of money (one tiny example; there are probably hundreds and thousands) and they did nothing wrong. A good modern currency should not have this defect.

It does have positive points which is why many people are using it but it would have been nice if it didnt have the above problems.

One would think if a new digital currency was created it wouldnt have issues like this. Computers and software are so powerful now. It should have been possible to design a currency with none of the issues above.

"Then dont use it" Or "Why dont you make your own currency system?"
These are not valid responses so they shouldnt be said here.