Well, although Ms. Houston has been roasted on the grill for her chemical dependency issues, her codependent relationship with Bobby Brown, etc. I found the following facts to be very explanatory of what happened in her life:
Imagine the following, if you had her life:
1.) You are left on your own with others to care for you for most of your childhood instead of your parents
2.) You are naturally very religious, love church and consider it your second home, and your Mom has an affair with your pastor
3.) You are sexually abused by an adult female relative, and thus are too afraid to disclose, and it subsequently causes you to question your sexuality, leading possibly to a lesbian relationship later on, and guilt that you think the abuse was your fault.
4.) Al Sharpton calls you "Whitey Houston" because you are not singing "black enough"
5.) You are booed loudly at the BET awards, again for not singing "black enough"
6.) Your brothers give you marijuana and cocaine for a 16th birthday present.
7.) You love your daughter, but have no idea regarding parenting, neither does your spouse, so you screw up on that, and try to fix it, but it's too late.
8.) Your own Father steals a ton of money from you, then sues you for a million dollars because he thinks you owe him
9.) Most people around you are hangers-on, relatives who can only make their living from you, and people who do not have your best interests in mind
10) The record label pushes you to tour when EVERYONE including your manager, things you are not in a good place to do that, and that it will only be a disaster.
11) You are one of the greatest singers ever to live, with all of the attendant fame, pressure, problems, incessant touring, that that requires. People covet that lifestyle....they shouldn't, it's not what they think it is.
12.) Your husband consistently cheats on you and abuses you. You probably take it because you feel you don't deserve any better. You think everything is your fault. This is very common among survivors of child sexual abuse.
After all of that, who WOULDN'T want the relief of drugs and alcohol just to be away from the pain, sorrow, pressure, failure, and guilt that you would feel, all documented ad nauseam on every rag sheet in every store in the world. It's surprising to me that she survived as long as she did. She had the face, voice, and, I believe, heart of an angel. Best voice I believe I will ever hear in my lifetime. RIP Whitney, many of us think only the best for you and have only empathy for the struggles in your life. None of us are perfect, and for one will never judge you. Your music still shines light into my soul. Thank you for sharing your gift with the world.