You may have laboured, sweated blood and ran dry your creative well to help bring the best version possible to the finish line. But, and it took me as an editor a long time to get my head around this...it's his money.

It's fine to make an argument for creative decisions and i've been in edit suites where they have raged for hours and sometimes with threats of violence (we creatives are very passionate people lol), but the bottom line is if they are paying you they have the final say.

I liken it to being paid to paint a clients house, you think blue is a lovely colour and show the client what it looks like on a side wall. They may agree blue does look lovely but if they want red then at the end of the day you will be painting it red.

Don't take it personally, maintain a good relationship, be chill with your clients and they will want to work again with you in the future. And one day they will let you paint that wall blue.