Are oak kitchen worktops serviceable?

Yes, as long as a food safe finish is applied, such as tung oil, or mineral oil. Reapply when wood seems to be drying out.

Most, Yes

Consider where their feet have been. Floor, litter box, they will sit down at some point with there butt in contact with it, hair and dander fall out all the time.

I just had a fit when I came home and mother in law has got super glue all over my laminate worktop in the most shiny area of my kitchen!! I actually think I have removed all of it. I thought the...

There are various joining methods depending on whether it is a solid surface, laminate, real wood or stone worktop. Most use glue and clamps, or a specialist joining strip