I too have been holding off, not seeing any real reason myself to get it XD Looks the same as windows 8, and many people complain about it crashing....
I don't think you should upgrade from any system due to architecture fitting the best for its OS, imo. However if you decide to buy a new computer you should get Windows 10. I have a Windows 8.1 laptop and decided not to upgrade it; when I bought a new desktop I opted for Windows 10.
I like Windows 10. Better than Win8, which I liked a lot. Unless you want to get Ubuntu, I recommend upgrading. (I started using it ~3 days after it came out and I am still happy with it.)
The crashes people experience come from improper upgrades. If you want windows 10 you gotta do a clean installation to get the best experience. (using the windows upgrade tool to create a bootable usb drive should work.) Also I'm pretty sure this should be in off-topic.
Windows 10 is good, I didn't encouter any problems after I installed it. I would recommend it. Also moving this to off topic
Windows 10 is okay, but it would be better if you did as @kukelekuuk00 suggested. I get weird bugs from time to time, but besides that, I enjoy it. Would still prefer Ubuntu Linux tho