+ The minimum billing increment switching to 8x your 40x your previous increment will, by itself, scare away the worst pathological clients in the pool. (If you have a $50 hourly rate, some clients might naively assume that they can get meaningful software development done in 3 hours. Where's my website? I've paid for three whole hours. What do you mean you're still setting up the dev environment?)
+ If you bill hourly, you have to account for your time in fractions of an hour. This will lead to more overhead (spend 17 minutes on a phone call? Record that fact somewhere! Maybe dicker over whether it's really .25 hours or .5 hours and whether this totally inconsequential $12 difference matters to the client.), more stress from your client reviewing your work on a minute-to-minute basis, and more friction about clients misunderstanding the nature of knowledge work. I can't just slam keys for 8 hours straight, and you wouldn't want me to do that if I could.
+ [I'll add something here in a moment but Ruriko wants breakfast.]
Good clients don't care about you charging daily/weekly. I never lost a client over it. I'm the professional, my standard practice for doing my thing is the standard way for working with me. If you can't deal with that, that's fine, there are other people out there. (Relatedly, I never, not even once, got a contract from a "job posting.")
+ The minimum billing increment switching to 8x your 40x your previous increment will, by itself, scare away the worst pathological clients in the pool. (If you have a $50 hourly rate, some clients might naively assume that they can get meaningful software development done in 3 hours. Where's my website? I've paid for three whole hours. What do you mean you're still setting up the dev environment?)
+ If you bill hourly, you have to account for your time in fractions of an hour. This will lead to more overhead (spend 17 minutes on a phone call? Record that fact somewhere! Maybe dicker over whether it's really .25 hours or .5 hours and whether this totally inconsequential $12 difference matters to the client.), more stress from your client reviewing your work on a minute-to-minute basis, and more friction about clients misunderstanding the nature of knowledge work. I can't just slam keys for 8 hours straight, and you wouldn't want me to do that if I could.
+ [I'll add something here in a moment but Ruriko wants breakfast.]
Good clients don't care about you charging daily/weekly. I never lost a client over it. I'm the professional, my standard practice for doing my thing is the standard way for working with me. If you can't deal with that, that's fine, there are other people out there. (Relatedly, I never, not even once, got a contract from a "job posting.")