ariana, the bottom line is, you are not devoting your life to jehovah, you are devoting your life to a bunch of men in NY. Again, do your own research, not theirs. Find out for yourself. Cults also don't like their followers to be educated, they tell them what they learn from them is far more important than what they learn at school or uni. Dosen't make it right though.
They have been wrong so many times (as already noted by several others). Do you honestly believe they are teaching you about a god of love? Do you honestly believe a god of love would destroy babies, children and others that did not have the opportunity to 'learn' about him? Do you honestly believe a god of love would allow sex abuse victims to be accused of provoking their attacks? Do you realise the 'two witness' rule has landed the watchtower society in a lot of hot water recently? Do they disclose any of that information to you?