Ah yes, I completely agree with onelittle - pumping is a PITA. I saw a summary of expressing here on MN once and it was so true. It went something like this:-
BF Mum cleans and sterilises pump equipment.
BF Mum works herself ragged trying to express milk (I only got an ounce or so at a time).
BF Mum decants milk into bag and carefully labels and stores it.
BF Mum sterilises bottles.
BF Mum warms milk and puts it into bottle.
BF Mum hands baby and bottle to family member.
Family member sits in comfy chair and feeds baby and glows about how wonderful it is that they are helping the BF Mum so much.
BF Mum washes up bottles ready for the next time.
Optional extra - BF Mum uses the time that the baby is being fed to catch up on all the chores that wouldn't otherwise get done.
I'm not knocking EBM completely - some women find it much easier to express than I did, and it can mean the difference between staying at home for 6 months and getting out for some one on one time with DP/DH. But I went through all the above, and ended up...
DD1 - using the odd bottle of formula once BF was establised well, so that I could go out.
DD2 - giving up on the whole idea of bottles, as she hated them so much and just BF her.