Soul Saturdays: "But I Love (insert Person Who is Bad for You Here)"

I know Soul Saturdays are supposed to be uplifting, but I think sometimes venting is good for your soul and therefore uplifting :) With that in mind, this statement "but I love ______" has been grating on my nerves.
What has sparked this annoyance? I'm gonna blame the television show Friends. I have my DVR set to tape any Friends episode that comes on, and they have marathons on Nick at Nite all the time (cutely grouped according to whose "night" it is, meaning that one character's best episodes are played back to back to back).
While I love this show, and I mean that, seeing the episodes grouped this way, instead of linear, put some "Rachel loves Ross," no, wait, "Rachel loves Joey," whoops, "She Loves Ross Again" episodes in the same night. While this plot element was and is engaging and tugs on your heart strings, it also sometimes makes you want to slap the characters. And these characters would often explain their acts of selfish, self-sabotaging, ridiculous behavior with the statement "but I love _________."
When someone says, "But I love ______," the but gives it away. Either the person they are speaking these words to has just hinted that
a) ________ isn't good for you
b) ________ treats you wrong
c) you deserve better than _________
d) ________ is going to break your heart
3)or a variety of one of the above.
The point is, if you have to defend your relationship with someone by saying "but I love ______," chances are that you don't think you should be with them either, but you are scared to be alone, or start over, or have another failed relationship, or can't see any other immediate path without that other person.
We can love people that are wrong for us.
We sometimes should walk away from people who aren't good for us.
Just because you say you love someone or they say they love you doesn't mean you really do or that love is enough.
If you were 100% honest with yourself, you probably aren't happy in the relationship and need to get out if you catch yourself saying, "But I love ________."
And even though it pains me to say this, Rachel and Joey should have ended up together probably. Just sayin'.