Although it originally just happened more than me deciding to do it, I have been following a weekly laundry routine for several months now.
It is so helpful to #1 - not have to decide what to wash each morning, and #2 - know when the next load of X,Y ,or Z will be.
We separate the laundry into 2 hampers as it is dirtied: a white hamper for whites and a blue hamper for colors. Most weeks my laundry routine looks like this:
Monday - Blue hamper. This includes the majority of clothes and pjs, and takes 2 loads to get it all clean.
Tuesday - White hamper. Socks, undies, etc.
Wednesday - Sheets & towels.
Thursday - Blue hamper. Again on Thursdays this usually requires 2 loads.
Friday - Kitchen towels and dishcloths and any miscellaneous leftovers.
Brooklyn's things are still separate in her own laundry basket, and I wash hers as-needed. Generally once a week.
Of course, this is a general guideline and not a rigid schedule, but I love the general predictability of it and (usually) not having to do laundry on weekends! I estimate we wash 8-10 loads of laundry each week.
Do you have a laundry system? How many loads do you do each week?