The 36-year-old was recalled for the recent ODI series defeat in Sri Lanka, but only played one match before flying home following the death of his nephew.
Chief selector Moin Khan suggested Pakistan's decision to bring back Younis had "backfired" and the veteran batsman was duly overlooked in the latest squad announcement on Wednesday.
Pakistan, who are still unable to play international cricket at home, begin their preparations for the World Cup with a three-match ODI series against Australia in the United Arab Emirates, starting on October 7.
An angry Younis hit out at the decision to drop him from Misbah-ul-Haq's side and branded the treatment of him as disrespectful.
"I came back after almost 17-18 months, but they said he is not in our future plans," he said. "Who has a future then?
"I give my 120 per cent as a player, I am perhaps the only cricketer [who does so]. I am not saying drop a youngster and let me play. I am just saying that justice should be done with players like me, give us what we deserve.
"My nephew died and I came back. When they do such things with senior players, what will youngsters think. Change doesn't come like this, you can't wave a magic wand.
"Don't let everyone be treated in a similar manner, those who have raised the flag of this country, don't disrespect them otherwise no youngster will play for Pakistan."
Continuing his outburst towards the Pakistan Cricket Board (PCB), Younis hinted he is ready to walk away from the Test side.
"Don't select me, not even in Tests. I sacrifice my future," added the 36-year-old. "I am saying a simple thing, if they are saying that youngsters are future of ODIs, then where is the future of Pakistan in Test cricket?
"Don't select me in Test matches and make [the youngsters] the future of Pakistan in Test cricket too.
"But what will happen if they can't make a team for ODIs and Test matches after five months, will they again do recalling?
"I won't die and I won't be 70-year-old in four-five months, if they don't let me play with dignity then so be it. They have hurt me, they have hurt me when they said that players like me have no future. Then who has a future?
"So a player like me should shoot himself? When they are 35, 36, players like me wake up at seven 'o' clock, show commitment, I can do only this.
"Instead shoot ourselves, don't play cricket at all, don't play domestic cricket at all? I will wait for 4-5 months. They are saying that I don't have a future, I will wait, I am not retiring, I will wait, may this team go ahead, if they make the team [strong] I won't come back."