Here you are saying masturbation is bad habit (in last) on the other hands some other people have different opinion about it they called it un-natural act not SIN. Even one of your sister site renaissance.com suggest one person to do it on some situations. So why you people have different opinion.
Firstly let me clarify one point before clarifying this misunderstanding.
why you people have different opinion.
If by “different opinion” you mean different approaches to understanding Islam, then I can only assure you that this is not the case. All our sisters-sites have the same approach (i.e. understanding Islam purely from the Qur’an and the Sunnah). However if you mean that all the individuals who follow the same approach should have the same opinion about every thing, I beg to disagree. With the same approach people still might end up with different opinions. This is not a negative point but is indeed a very positive one that represents human intelligence and open mindedness.
Now back to your point about the contradiction:
No where in the answer is it said that masturbation is sin (although I believe it is extremely close and associated with some acts of sin).
If what you are referring to is calling an act, “bad habit” or “unnatural” then I cannot see what the contradiction is. Based on what I explained in the above paragraph, I think this much flexibility and variation in choosing a term is not a contradiction. The phrase that contradicts “bad habit” is “good habit”.
In terms of Renaissance suggesting a person may do it in some situations, firstly as you clearly see, the suggestion is to do it in “some situations” and if you read that answer of Renaissance carefully you will see that the situation is indeed a very rare one. I am sure you agree that this is completely different from doing this act as a “habit” (that is the subject of the question that was answered here).
Secondly, as I explained at the beginning of this answer, one cannot expect all the people who are students of a same approach to Islam to come up with exactly same opinions about all issues, in particular issues that are not directly addressed by Shari’ah. The important thing is that it is based on the same approach to understanding Islam, writers on this website and other sister organizations/websites have come to the conclusion that there are no express Divine directives about this issue. Surely when an opinion is not based on any directives of the Shari’ah, it will be hugely subjective to the individuals.
I again repeat that there are no contradictions between the two sources as one of them is addressing the issue as a habit while the other one is addressing it as a possible temporary solution for a very rare situation.
July 1, 2005