We live today in a highly developed society and it's really very sad that some people can escape the suffering only by ending life. There must be other ways to deal with suffering, I'm sure it's very realistic. But, this problem is still underestimated and neglected, and almost all people find that suffering is normal part of everybody's life.
The suffering that is a normal part of life is not the same as the suffering people have that leads them to think about voluntary euthanasia. I disagree that there are realistic treatments for suffering. Medical care can only alleviate some illnesses - there is a lot it cannot do. Pain is only one factor, there can also be nausea, involuntary shaking or muscle movements, constipation, diarrhoea, urinary symptoms, chronic open wounds, discharge, breathlessness, dizziness, anxiety, depression, fatigue, insomnia, dry mouth, dry eyes, loss of appetite, loss of vision, hearing, taste, and smell, skin itching, paralysis, psychosis, dissociation, and dementia. Many of these symptoms can be difficult or impossible to reduce.
Opponents of voluntary euthanasia claim that law reform would reduce the development of treatments to reduce suffering but IMO that is a logical fallacy. All the voluntary euthanasia advocacy groups that I'm aware of support improvements to palliative care, not just for it's own sake, but to assist those who do not wish to end their life. It's about freedom of choice, at the end of the day.