It helps to quote for deliverables instead of time spent. Then the client has no incentive to concern themselves with your schedule (plus if you know what you are doing, it's the easiest way to achieve really high hourly rates).
But people who do 8-5 "freelancing" as individual contributors in a dev team, I don't know what is the point of that (besides tax evasion)?
I particularly like working with small(-ish) business owners who don't have any corporate background whatsoever. They never use phrases such as "catch up" and tend to be genuinely human.
I like the latter the most, though one person likes to spring "hey I need a new feature tomorrow" at 3 am while they're playing wow
This also implies you are truly freelance. Not agency or studio type.
as for myself I'm free to work on my own, there are meetings I attend
project's pretty good, fingers crossed it lasts forever