I never once was able to completely create a back up or boot disc and always wasted 5-12 discs trying. Only copied 1 online for emergency, but you still have to transplant all your files from your old to new and sometimes lose your registration that was in your registry.
I also almost always have problems with restore points working, you wait forever to be told it couldn't restore to the old point.
Rescue disks also never allow you to do the tasks you want to do to save your old files and settings. And lastly, never ever has Microsoft find/repair a problem search ever found or fixed a conflict or issue.
I laugh everytime a techy suggests fresh installs, like it's easy to start from scratch all over again with all those intrusive and unecessary programs and features you had to remember to shut off or remove to make your computer faster and more slimline and safe.