I don't discard all their teachings, but sadly they have stagnated in their increasing knowledge of the truth. And that's not strange either, because the wt-organization expells everyone who does his own personal bible study if he finds that a wt- teaching is wrong and tells about it in the congregation. Elders do even not defend their beliefs if you can show them from the bible that they are wrong. They just order you not to talk about it or disfellowship you.
So how they treat sincere brothers and sisters who have bible based different understanding of the sciptures is totally wrong and very similar to other religions and to the pharisees and scribes in the days of Jesus.
I grow up in a jw family and was baptized, and because of being injustly treated for about 20 years in different occasions, I started to realize more and more that not every thing is ok. Gradually I experienced that ministerial servants, then elders, then CO, and then finally the governing body are not that good as they pretend to be.
The first teaching that I doubted about was when the anointed would be ressurected to heaven. They teach that it happened in about year 1918. But according to the Bible the anointed will be ressurected and there after the remaining anointed will be changed from being humans to become spirit creatures. That is very clearly stated in the Bible. So if the dead anointed would have ressurected in 1918, then the living anointed should have been cought to heaven. But that has not happen until now. In addition wt does not either believe until now that the last anointed will be changed from human body to spirit body.
So, that made me think. If wt-org is so blind to such clear bible verses, then how is it with the rest of their knowledge? Even the name Jehovah's wittnesses is not the most appropriate for Jesus' dicsiples. The first christians did not call themselves Jehovah's witnesses. Instead Jesus wanted his disciples to be his witnesses. So, it would been better to be called Jesus' witnesses. But that is not either necessary. It is enough to be called christian and belonging to the Way, as did the first centry disciples of Jesus.
I counted that about 30-40 teachings and practices of the jw-org are not right, according to my personal bible research. But sadly all other churches are the same or worse.
So, if you want to know the truth, study the bible yourself, with the guidance of the holy spirit and you will be lead into all the truth. And even more important is that you live according to God's commands.