My conclusion is I hardly see place for another browser. There is no real reason to switch to Opera, just personal preferences.
You don't see a place for Opera at all just because you personally prefer a different browser? That's a bogus argument if I ever saw one.
The fact is that Opera has been around for longer than both Safari, Chrome and Firefox. It is not "another browser". Chrome is the "another browser" of the current "major browsers". It's the newcomer. Opera is a veteran.
The fact is that Opera is growing its user base all the time. The revenue from the desktop version is increasing. How is there not a place for Opera when it's actually growing and bringing in more and more money to its makers?
I found Opera to act different than other browsers, different shortcuts , and slower, and sometimes problems rendering websites.
The latest version of Opera is the fastest, at least according to many tests.
I am amazed to hear that people out there are using Opera, I do not know what is their reason but, if you like it then I guess it should exist.
You are amazed that not everyone is exactly like you, and that you personally can't dictate people's taste in browsers? Wow.
I'm assuming that you are amazed to hear that people out there are using Macs as well. I mean, seeing as Mac is a minority platform and all that. And your logic seems to be that minority platforms don't deserve to exist at all!
This is ridiculous. Opera has been the slowest browser ever since Safari 3 (well, after IE 6).
I disagree. Opera has always been snappier. But ignoring that for a moment, are you saying that if another browser happens to be faster, Opera suddenly and magically slows down to be slower than it used to?
Heh.
Opera's interface sucks, it's always had compatibility issues, and it introduces a different layout engine that really isn't necessary.
Sorry to have to break it to you, but Opera's engine is one of the oldest in existence. It's older than Gecko, and certainly older than WebKit. If there is any engine that was "introduced", it was WebKit. If anything wasn't necessary, it must have been the most recent one, which is WebKit.
As for compatibility issues, I find it interesting that even Chrome fails with Google services at times. In fact, I seem to run into quite a few compatibility issues with WebKit browsers. Gecko is much better there.
You also failed to address this:
It's interesting that Mac users are whining about Opera not being needed. Is Apple not needed either because Macs have such an abysmal market share?