Computer All in One verses the Desk Tops

Whats everyones opinion on computers All in One or Desk Tops?  What if the all in one break which is the computer itself in the all in one.  I know you can get a warranty but what if the whole thing breaks?  At least a desk top  might be easier to fix.  I like the wireless keyboard and mouse but everyone just loves the all in one computers.  It’s a big disadvantage if the whole machine breaks.  

Need some ideas

Thanks folks

Lynne