Some questions and statements regarding homosexuality.
I’m not sure exactly what you’re looking for with all your questions (I think there are more than 5!)
No, homosexuals are not “evil”. It’s important to make a distinction. First, there is the homosexual
inclination (aka same sex attraction [SSA]). Then, there are homosexual
acts. The Catholic Church does not condemn the inclination, but only the act.
You bring up alcoholism. Using that as an example, someone who is an alcoholic is not in a state of sin simply because of that fact. However, if he or she
acts on that impulse and goes binge drinking, that would be sinful. Of course, due to the fact that alcoholism is an addiction, an individual’s subjective culpability might be diminished or removed. Therefore, I wouldn’t presume to judge the state of such a person’s soul. But the act of abusing alcohol is still objectively wrong.
For those who have SSA, simply having the inclination is a cross they have to bear, but it is not sinful and does not make them “evil.” If they act on it, that is sinful (but we still don’t call them “evil” - all of us are sinners). But, again, as with alcoholism, there may be factors that reduce an individual’s culpability, so I would certainly hesitate in presuming to know the fate of their soul.
As to the causes of SSA, some say it is genetic, some say it is the result of upbringing, some say it is a combination of the two. Frankly, that is a matter for scientists to investigate and doesn’t really matter from a moral standpoint, objectively speaking. (I started a thread on this subject -
The “Gay Gene”: Does it Matter?. You only need to read the first 10 or 20 posts to get the general idea. The rest is mostly off topic

)
Regardless of the
cause of SSA, the
act is still objectively wrong. But, of course, we want to always act with charity to all people, and this includes those with SSA. Calling them “evil” or “diseased” is probably not the most productive tactic towards that end.
We don’t want to sugar-coat the fact that the Catholic Church teaches (in accordance with Revelation and the natural law) that homosexual acts are disordered and sinful. But neither do we want to be unnecessarily harsh or condemning. That usually only serves to alienate people and drive a wedge between them and the Church.
Equating homosexuality with pedophilia is also a poor tactic, IMO. Some people equate the two, I think, because most pedophiles seem to be men, and most of them seem to target boys (i.e. people of the same sex). I don’t know if there’s any research that investigates the link between the two (my guess is probably not). In any case, it seems wise to treat the two issues separately. Those with SSA tend to get offended if you accuse them of being a pedophile (and who can blame them?). Maybe
some of those with SSA are also pedophiles, but not all. And there are probably heterosexuals that are pedophiles, too. We wouldn’t want to make the leap that all heterosexuals are pedophiles.
Hopefully this answers some of your questions?