@TigersRoll
YABVU. Brooklyn Beckham has not done you or anyone else any harm, and he can't help being in a privileged position in life.
As quite a few other posters have said, he seems quite lost and can't seem to find an identity. He has tried modelling, and writing poetry, and publishing a book of photos he took.
He is trying to find his way in life. Not sure what else he is supposed to do? 
He is the child of 2 hugely successful celebrities who have very successful careers, and big fan bases. But he seems to have no specific talent, and I'm worried he is going to remain lost and directionless. (And/or a pointless 'reality tv' bod, like Calum Best.)
Calum's dad (George) was a hugely successful star of football, and a legend of the 20th century, but Calum is just famous for nothing, and has been a bit of an embarrassment in the past. Not his fault really; it must be very hard, living in the shadow of your very famous and successful father (or mother...)
I hope Brooklyn Beckham will be OK, but I fear he may end up like many kids of celebrities; becoming an addict, with mental health issues. I hope this doesn't happen. I worry about him tbh.
He is 20, but seems a bit like a fragile and emotional child sometimes......
See also: Rocco Ritchie (Madonna and Guy Ritchie's son,) Chet Hanks (Tom Hanks son,) Weston Cage (Nicholas Cage's son,) Indio Downey (Robert Downey Jr's son,) Bobbi Brown (daughter of Whitney and Bobby Brown,) Jaycee Chan (son of Jackie,) Bruce Willis and Demi Moore's 2 youngest daughters, and Cameron Douglas (son of Michael,)........
All of these people, ^ have been in trouble with the law, and/or in prison, or suffered mental health issues, or suffered with drug and alcohol addiction (in some cases, more than one of these things!)
There's also the daughters of Bob Geldof and Paula Yates, (including tragic Peaches,) and Marlon Brando's sons - one who (I think) commit suicide. Drew Barrymore (daughter of John Barrowmore,) nearly died as a teen because of drug addiction at THIRTEEN!) And Carrie Fisher (daughter of Debbie Reynolds and Eddie Fisher,) battled with drug and alcohol problems all her life... There are many many more....... Offspring of successful and famous people, who struggle massively with finding their identity, and their purpose in life.
It may seem like a great life, having famous, rich parents, but it's a poisoned chalice for some.
@daisychain01 - re your post at 14.04... I agree with pps that assuming someone cannot possibly have mental health issues just because they are from a rich family, is a breathtakingly ignorant and ridiculous comment to make. As has been said, you clearly know NOTHING about mental health.