I'm sure it's very good the first time you take it. If you don't consider all the effects before taking it, it does make sense. You feel very good, but the even stronger negative effects come after. Same can be said about a lot of technology.

Is the implication in your question that social media is addictive and should be banned or regulated on that basis?

While some people get addicted to it, the vast majority of users are not addicts. They choose to use it.

Addiction is a matter of degree. There's a bunch of polls where a large majority of people strongly agree that "they spend too much time on social media". Are they addicts? Are they "coosing to use it"? Are they saying it's too much because that's a trendy thing to say?

People who take Heroin think it is good in the situation they are taking it.