When you buy a home, there are a lot of things attached to the property that you can't see straight away. In a normal property transaction, we get 20 - 30 documents from the estate agent, which we review.
There are old easements, permits, information about pollution, local plans, etc. Documents that we have a lot of experience in reviewing - and which can be quite confusing for you.
We take care of all the practicalities and advise and guide you through the whole process. We do our utmost to make you feel comfortable throughout the process.
So the answer to the question is: To provide reassurance and to avoid unpleasant surprises later.