john9blue wrote:i was under the impression that wine doesn't run all windows apps. does it?
Wine is not able to run every application designed for Windows. In fact, honestly, most people just use Wine for playing video games that are designed only for Windows or Windows/Mac. But you said that Linux is not as suitable for general computer use, and the reason I take exception to that is that there are plenty of suitable alternatives to Windows applications that make Wine compatibility irrelevant. For example, Open Office (now LibreOffice) is actually fairly good lately, and can do the normal things that Microsoft Office can.
I'd say there are notable exceptions to this principle; for example, one annoyance to me is that Netflix really dragged their feet on making their streaming software compatible with Linux systems (since they utilize the proprietary Microsoft Silverlight software). So I wouldn't say that any Linux system is a perfect substitute for a Windows system. However, the benefits that come with the enhanced power one has with, say, Ubuntu, will outweigh many of the incompatibility issues. And you can always dual-boot (I do this on my PCs since I didn't have to pay for my copy of Windows, or got them very cheaply because of student discounts).
and is a live usb OS slower than an OS on the hard disk? because like i was saying earlier, ubuntu runs slower than windows on some occasions.
Actually, Flash memory is inherently faster than hard disk memory, so, all other things being equal, I'd expect any OS to run faster off of a USB drive if you can fit the whole OS in memory. But it's not so important because most people who use Ubuntu regularly obviously install it to hard disk.