Should terminally ill patients be allowed to end their lives via assisted suicide?

people could do this if they know their death will be painful/soon, and they want to be put out of their misery.

No; assisted suicide is a permanent decision that places already vulnerable individuals; the elderly; terminally ill; mentally ill; the disabled; and others, in a situation to be exploited, which denies one the ability to live their natural life to completion, with dignity, in whatever stage of life they may be. Moreover, increased government funding and investment for health services; palliative care; psychiatric care; general practice; and healthcare overall, is what is truly needed.

I don't feel knowledgable enough to answer this question

only as a last resort. if there are options then take those options first.

Yes but only as long as the government doesn't use it as a substitute for providing adequate living conditions for those with the option available.

It depends person to person

Yes, but within certain circumstances.