I am thinking of getting one computer with ubuntu but I am not sure about compatability-stuff. There are sooooo many softwares that works in windows that doesnt work in macOS so I guess there is no emulator or such in order to use win-software? Openoffice etc is acceptable (but not as good as office2010, especially not powerpoint nor excel) and browser+video plus everything else is just a lot worse?
Well, it's not that you have to upgrade or something. 😛 If Vista serves your needs than there is no reason to upgrade. But it you do want to try something new then you can always do so without loosing your Windows installation. When you put the Ubuntu installation CD into your computer, you can try the OS without making any changes to your system. This is a great way to play around with it and see if you like it. You can then decide if it's worth switching for you.
You can use the 32 bit version, but if your system is capable of using 64 bit I highly recommend to use the 64 bit version of Ubuntu (or any OS for that matter!). It's just a lot faster and if you have 4GB of RAM or more, it is actually needed to use all of it.
I don't know why the 32 bit version is still recommended, a few years ago there used to be some problems with the 64 bit version (mainly with software and driver support) but those issues were addressed a long time ago.
Personally, Vista is absolutely horrible. So I would either get a new mac or get a windows 7. And one of the advantages of ubuntu is that it is free and you can get a free word processor without cutting off your arm. But if you have an old comp without any applications like microsoft word i believe ubuntu is the way to go.
I chk'ed out wubi on my 2.0Ghz 512ram, and it crashed at least 2 times until I uninstalled, though I didn't have much extra space, for the wubi. Is there a big difference, if so I just might try harder to free up some space. 🙂