Well, if you hate it, don't do it.

But really, like others have said, we all have to find the groove that works for us.
I mix it up quite a bit, but I do try to wake up at least two mornings a week and jog. I have a new treadmill (yay!), so it works for me. I wake up forty minutes earlier than usual, pop in my headphones and hit the start button. I like it because it gets me in a good head space for the day. I feel more energetic and less stressed, and for some reason I tend to get ready faster on those mornings. That leaves me a little bit more time to sit down with my breakfast and watch the news. Plus, I feel like I can relax in the evening.
I work out in the evenings two nights a week with Zumba, but it is a little hard for me to self-motivate when I get home from work. Zumba doesn't start until 7:00 PM, so I can't really stay at work that late. So, I drive home, eat a snack, change clothes, get a little settled, and then I have to drive back to town (I live about 20 minutes outside of the towns on either side of me). It takes up an ENTIRE evening, it seems. I enjoy the class so much, however, that I would hate to give it up.
ETA:
sontaikle -I always do any muscle building in the evenings. Somebody would have to come pick me up off the floor if I tried to lift in the morning!