Unpopular opinion

You are right. You are able to think for yourself and don't succumb to peer pressure.

Congrats on that btw.

But many people don't stop to think..they are just cattle herd following what everyone is doing and social media has made it much worse.

They all will be suffering 10 years down the line. They just don't know yet.

Partying is okay smoking is not.
And giving back to society...... Well I pay 30% tax+15-20% indirect tax. That much should be fine for society.

Simply answer is peer pressure. People who go for smoking breaks with the manager get favourable treatment. If you don't attend office parties you are seen as an outlier, someone who will quit the company.
On the hookups and shit, people are horny and bored.

Root cause of these activities are excess use of personal choice, people tend to do anything and everything in the veil of personal choice irrespective of moral values.

You are correct and just because people around you are doing things they shouldn't that doesn't mean you have to practice all this nonsense.
I am also against these bad habits of smoking, drinking etc and I donot engage with those who practice these also I donot attend office parties. Ofcourse all this comes with a price - not getting top ratings, not having enough friends, but I am happy with my decisions. I'd rather be alone than be with the people I don't want to spend time with. Things are going to worsen..

Peer pressure is one way of looking at it. But it’s rather a cultural shift. Monetarily it’s definitely an avoidable expense, but if it leads to growing your network probably then it becomes an investment. So I guess it’s also largely to how one sees it and acts on it. Following health issues are a whole different ball game. Maybe someone who’s sensible to just enjoy a light moment , light networking and wind down over a weekend might be still be okay , if not great, in the long run. One may blame high disposable incomes but again it’s down to individual preferences. For me , I earn decent but not a fan of parties and hefty spending in a high flier club. I’m an introvert that way. While another may not be so… it’s a learning curve for the takers and haters equally nevertheless…

Mast judge kar lo yaar sabko!!

People are hating on weekend parties now? You don't know what they are going through during the week, lekin unki weekend party pe woh kharcha kare toh problem?

If they hare happy with their hookups, what's bothering you? Sex is a normal thing, uska bada issue mat banao. If it was such sinful, then God wouldn't have made it enjoyable! No wonder your opinion is unpopular!

Try to pinpoint what bothers you. If all your friends go to pubs but you do not like spending much there and feel lonely, that's understandable. But if you don't like other people being very happy, that is BAD and you need to introspect.

Define Moral values first?

I have seen people preaching moral values to be the most immoral ones. Judging others isn't a very moral thing to do either.

I don't drink neither smoke nor party because of my personality. But this isn't because of "moral values" but rather because I want to live a healthy lifestyle and do things that suits my personality.

What people with do with their money and value is their wish. Their actions will obviously have consequences. Whom are we to judge

Its personal choice, whats wrong for you perhaps be right for other. Moreover, you need breather after slogging your ass for 5 days or 6 days a week. This breather for one could be to giving back to society or partying with friends or could be anything, until and unless you are not causing harm to someone.