First I must say that I applaud you for not offering a pacifer.
You said it yourself that your baby misses you, and that he is asking for the nursing COMFORT. His world has changed, and he needs you, he needs reassurance from you. Asking how to make him forget breast feeding and do other things is like asking how to make him not want to bond with you.
If you need a moment when you get home then make a plan that when you get home he'll be in another room so he doesn't see you right away. That should give you enough time to use the rest room and get a bit of a refreshment before going to your baby. Then you'll feel better and be able to breastfeed in a better mood.
Also breast feeding can be relaxing for you too! I remember breast feeding my little one, I'd make sure I was all nice and comfy before starting. I'd either have a book to hand or a DVD playing. Sometimes I'd just lay back with some pleasant music on and take a short doze. Sometimes I'd have all the options at my finger tips in case I changed my mind! I'd also have water and a snack at hand as well.
While prepping I'd talk to my baby, telling her what I'm doing and that real soon we'll have a nice comfy relaxing time together and how great that'll be, yadda yadda. That helps baby be patient.
Try this, and I bet dollars to donuts that your attitude about breastfeeding after work will change.