Breast or Bottle?

I have always been a huge breastfeeding proponent, I nursed all my children exclusively from between 15 months to up to 25 months.

However, this time I am just not feeling it. I nursed my last little guy so long because he was supposed to be my last, and I didn't want the experience to end. This one most definitely WILL be my last though but yet I am not feeling the draw to it.

What's wrong with me? To me (just for me personally) it seems dumb to not nurse when I am fully capable, because why should I pay so darned much for something I get free? We aren't well off and shouldn't spend the money on formula if we don't need to.

I am wondering if I will feel it by the time the baby is born. If not, I'm secretly excited about bottle feeding. I've had 4 children and never bottle fed any of them. I almost feel like I'm missing out on something.

Am I a nut?