Why do fools fall in love?

I never thought that I would be in this situation. I'm in love, so deeply that I sacrifice almost all of myself for them. Yes there is two of them. Two wonderful men in my life. I do everything for them cook, clean, wash, do everything I can to their benefit. And for so little in return. I never pictured myself going up to be in this position. I saw myself more being a nun or off in some remote jungle living with the native, wild and free. But now I'm in chains. They shouldn't feel like shackles but they are. It's my marriage that chains me, and my son that keeps me here. Don't get me wrong all hope isn't lost, but after almost 2 years of disappointment and hurt it's hard to remember why my husband and I started this journey together. I feel like I am treated no longer as his wife, treasured and adored, but more like his mother, useful but kept at a distance. Is this the natural course of marriage? I dearly hope not, but for now I must face the way it is, and pray for change.