[kbutler]

But the washing and drying time at home can be used for other things - parallel processing with asynchronous dispatch of mutually exclusive washing and drying jobs.

Laundromat: Time and hassle to bundle everything in the car, take it to the laundromat, babysit it while there (you can't go anywhere else) and bring it back home. Completed sooner, but with more overhead and focused time.

Home laundry: take it a load at a time. Completed later, but you can do anything else (even leave the house) while loads are running. No transportation overhead.

Both models have advantages, and I've done both. Mostly depends on how much hassle it is to trundle everything to the laundromat, and how soon I need the backup cleared.