I personally want to be cremated when I pass away.
The reasons are numerous and are in no way motivated by a desire to deny the resurrection of the body (which the Church teaches would be an improper justification for cremation).
Firstly, costs. Here in South Africa poor families spend thousands and go into debt to buy an expensive tombstone, to ferry their entire family by bus from across the country to attend a funeral, to buy a cow to slaughter for the funeral (although it will obviously not be applicable in my funeral), and it led me think I don’t want my legacy to my family to be one massive funeral bill. Just give me a dignified requiem mass and then cremate my remains.
Secondly, cemeteries are full. There is hardly any space left for new graves. This is likely in part due to the AIDS epidemic my country recently experienced. My Parish has a memorial wall and I think that would be a fitting and respectful place for my remains to go.
Thirdly the lack of burial spaces, high cost of tombstones and shortage of coffins has led many unscrupulous individuals to profit it from the misery of others illegally, by stealing gravestones, and even digging up graves in order to steal coffins. I don’t want my family to experience such sadness.
Lastly, I have an emotional aversion to burial. I was one of the pallbearers at my father’s burial, and the sight of the coffin being lowered into the ground is disturbing; not something I want my loved ones to go through (again).