It's a lose-lose proposition

Several times during the work day, I miss my kid. I stop for a minute, wonder what he's doing, look at his picture, look at the clock to figure how long til I get to see him, think about what we'll do together this weekend.
He's often the last kid at day care because I'm usually running late in the morning, so I stay at work as long as I can. We used to nurse in the car before heading home, but that's finished now. If he's cheery, I pop him in his car seat, give him a cracker and we're homebound. If he's grumpy, we play a little and then head home.
If dinner is leftovers, we play for awhile when we get home. If I have to make something from scratch, then I have to get right on it. If it's been a crappy day and I'm tired, the evenings aren't so great. Even more so if he's tired. Sometimes I snap at him and feel consumed with frustration when he fights me washing his hands or throws more food than usual at dinner. At those moments, it's hard to believe that just a few hours ago I couldn't wait to see him.
So, I feel bad for being angry with him and then guilty for not enjoying the limited time we have together.
Ick. Double ick.
My teutonic furnace may be able to pick up our little teutonic furnace ealry from day care tomorrow, so at least that's something good to think about.