Vipassana changed my life for the best. Since my first course, I did a few more, some 10 days, and some 3-day courses which are available only for people who already did the 10 day course.

It made me a better entrepreneur, better father, better spouse.

Like the commenter above stated, there are people who have psychiatric breakdowns following or during such courses. I don't think the Vipassana organization is doing a good job making this information transparent. But, from my anecdotal experience of over 20 years of courses, these cases are very few and far between.