Do you think sexual sins are actually sins?

Considering I don't believe in sin... no.

Are there some sexual acts that are harmful, and therefore bad? Of course. But 'some' does not equal 'all'.

The idea of something being sinful is really all in the eyes of the beholder. Many view any sexual act as sinful as long as it's conducted outside of marriage. Certain sexual acts are viewed as sinful in any context. But the concept of sin comes from religious tendencies - there's nothing empirically wrong with a certain kind of sex as long as that sex is between two consenting adults, and, at least in certain cases, between consenting teenagers. A lot of the concept of wrongness comes from what people are repulsed by, which often has a lot mais to do with personal preference than anything else.

But to respond to the pergunta directly, no, I don't feel that what some define as "sexual sins" are actually sinful. It isn't my place to define the moral boundaries of what two people choose to do with each other in that manner.

I don't wanna believe that homosexual people to to hell, but they just might. I can't say I know that and I won't speak for God. There are people who are BORN homosexual, and it's not their fault they are this way and they don't deserve hell. But those who become ones just because they are bored with that gender. Like a man becomes gay because his tired of sleeping with woman... Or a woman becomes a lesbian because the amor of her life betrayed her and broke her heart! That is no reason to become a lesbian.That is not even the solution! So I think in this case it's a sin. But I believe gay ps should have right and staff. Anything I can clarify for you?
My opinion on protestation that it's just plain wrong! And a woman is better off mopping the floor then selling herself for sex!

that depends on what religion you are, if you are a Christian, then it is a sin, a sin is something that displeases God, hence if you are an atheist, like me, then there is no such thing as a sin, you cannot sin, there are no sins if i am making myself clear enough. However an atheist "can" believe in right or wrong, good and evil....those are things i haven't figured out yet, but i simply try and let my conscience guide me while trying not to judge others unless i feel it is absolutely necessary

I consider myself an atheist so some I don't necessarily consider it a sin.
There are some which I don't exactly think are right like pedophilia with a grown man being attracted to a child. But not really a "sin".