Love/Hate Relationship with Swimming Lately

I know how you feel, and I love to swim.  It's what I grew up doing. 

I've started purposely setting my alarm for 10 minutes earlier than I need to so I get one snooze.  Then I get to the pool, in my suit, goggles on, standing at the edge, staring at the water.  That makes me a hippocrate because I hate it when the kids I coach do that, and I yell at them to get going. 

Anyway, like you, once I get going I feel good and as I climb out of the water for the day, I feel a sense of accomplishment.  The reluctance to get up, I hope, will go away once it gets lighter outside in the morning, and once it is warmer (even though I swim indoors).

^^^Yep, that's me, too.  I do my workouts at night when it's my husband's turn to put the kids to bed :-)

Perhaps it's the hour and that you're not a morning person. I love to swim at 5am and wish I had the opportunity to do so regularly. Partly because I am a morning person. Partly for precisely the reason you cite. I'm so energized by swim practice, what could be better than having that energy at 6:30 as I move on to the rest of my day. 

Usually I swam around noon, as that's when the local college pool opens for public swim. But regardless of what time I swim, my ideal is to feel a sense of eager anticipation beforehand. That anticipation is based on the mental satisfaction and physical pleasure I get from swimming well.

Matt Fitzgerald wrote that Haile Gebresellasie plans his training based on enjoying the experience, more than on any physiological considerations. I do much the same. That ensures I'm drawn to practice rather than having to push myself to it. 

If I don't feel that pull, I'll usually opt to skip the practice. I'm not suggesting you hit the snooze button, but that you find a way to more strongly imprint the way you feel 10 minutes in on your memory.