I have too semi agree with you, yes the written agreement is important to be able to have strong argument in the court this will allow you to have a better chance to be able to win if something went wrong. But I don’t believe that verbal agreement is actually good, this reason is because 1 you have to back it up and in this world money is involve and people can be bride to take the other side so I don’t believe verbal agreement should be allow, except if there is a recording to have a better evidence, if recording is not present I wouldn’t allow verbal agreement to be done at all.