Although there are various reasons thrown around that he choose not to take them seriously, it is now know that the this is due another Bollywood stalwart Shahrukh Khan, reported MissMalini.
Aamir made his film debut in 1988 with the film Qayamat se Qayamat Tak alongside Juhi Chawla and won a Filmfare Award for best debut male. In those days he was a regular at award shows and even made performances.
He was also present at Filmfare Awards when Anil Kapoor bagged the award in 1992 for film Beta, and even when Shahrukh Khan received one in 1993 for Baazigar. Both years Aamir Khan was also nominated in the same category alongside them.
However, it was the Filmfare Awards in 1996 when Shahrukh Khan won the award for Dilwale Dulhaniya Le Jayenge, while Aamir Khan failed to win for Rangeela which was appreciated and critically acclaimed but was not awarded.
It was after this that Aamir Khan refused to attend any award shows despite being nominated and has even refused to send clips of his films for consideration.
Now Aamir has never said this on record but he has been quoted as saying:
“Fact is that I have no objections to film awards per se. I just feel that if I don’t value a particular film award, then I won’t attend it either. Apart from the national award, I don’t see any other award ceremony that I should give value to. My personal experience about these award ceremonies is that I don’t trust them. I have no faith in them so I would prefer to stay away”
There are also reports that Aamir was approached for the blockbuster DDLG, but he refused to take up the project and has claimed that award shows are fixed.