ViceVersa
Having a pure cremation doesn't mean that your family and friends can't have a 'proper send-off' - they can do whatever they want to remember your life.
But many people find the ritual of having the deceased there and seeing the symbolism of the curtains closing and the casket moving out of sight, as an outward sign of the end of that person's life. particularly when, today, the custom of visiting the body while it was still at home or with the undertakerhas broadly ceased.
My DS worked for a religious organisation and after her sudden death, as well as the family funeral, which was attended by many who had worked with her, her employer also held a memorial service for her, so that other people who worked with her could pay their respects, some colleagues and contacts attended both.
The funeral in the immediate aftermath of her death had an emotional intensity and element of catharis to it, that was missing from the memorial service held some months after her death. I do feel that a party arranged later - possibly many months later, lacks the immedicacy that a funeral, usually within weeks of the death, has.