I like your view:

"I was somewhat sad to read their posts. I mean, I understand we are not perfect and that we somehow will commit sin, but to totally and outwardly deny Allah/The Messenger and His religion?"

This is what we should feel towards others, not animosity. We should feel sad that there are people who are destined (ditakdirkan) to be ignorant of Islam, people who will inevitably be the fuels of hell.

But of course, I am only human. I get sad but often I get offended instead; too many times perhaps. emotions then cloud my judgment and empty words pour out in place of knowledge-based persuasion

So, knowing this part of me is still unbridled, I avoid entering into a pit with a lot of such people. we are told to avoid arguments, no?

Rasulullah shallallahu ‘alaihi wa sallam bersabda:

مَنْ تَرَكَ الْمِرَاءَ وَهُوَ مُبْطِلٌ بَنَى اللهُ لَهُ بَيْتًا فِي رَبَضِ الْجَنَّةِ مَنْ تَرَكَ الْمِرَاءَ وَهُوَ مُحِقٌّ بَنَى اللهُ لَهُ بَيْتًا فِي أَعْلَى الْجَنَّةِ

“Barangsiapa yang meninggalkan perdebatan sementara ia berada di atas kebatilan, maka Allah akan bangunkan sebuah rumah baginya di pinggiran surga. Dan barangsiapa yang meninggalkan perdebatan padahal dia berada di atas kebenaran, maka Allah akan membangun sebuah rumah baginya di atas surga.”
(Shahih at-Targib wat Tarhib, jilid 1, no. 138)

From Islamqa.info

The websites that speak ill of the religion of Allah and of His Messenger (blessings and peace of Allah be upon him) are no different from the gatherings where people say similar things that constitute kufr. In both cases it is haraam to stay in such gatherings and it is haraam to visit such websites, except for one who will object to what they do and is able to put a stop to these offences. If he is not able to do that, and those people carry on with what they are doing, then it is not permissible to remain in that gathering and it is not permissible to visit those websites.

Allah, may He be exalted, says (interpretation of the meaning):

“And when you (Muhammad SAW) see those who engage in a false conversation about Our Verses (of the Qur’an) by mocking at them, stay away from them till they turn to another topic. And if Shaytaan (Satan) causes you to forget, then after the remembrance sit not you in the company of those people who are the Zalimoon (polytheists and wrongdoers, etc.)” [al-An‘aam 6:68]

Abu Shofwan,

JazakAllahu khayr for the excellent reminders.

Actually, on my side too many times emotions overcome me and instead of a sound discussion there is an argument instead.

This also tells me that I do not know enough about the Deen if I cannot back up my claims with sound evidence.

Many times I also just stay silent, even when discussing things among peers; for example if I have a different point of view based on other scholars' opinions.

On a general note:

Anyone reading this, are you going for classes/halaqahs anywhere? I'm quite keen but also have a tight personal schedule; trying to find a class that suits my schedule.

Do share with me any classes/halaqahs going on, Shah Alam is not too far from where I am. Will try and fit my schedule around these classes. Is this at IMuslim by any chance?

Also I agree that in this day and age with our technology, we can watch videos of lectures which is good and everyone does what they can in their capacity/timing/availability. However, someone mentioned to me once that actually attending physically, we get more barakah from the gathering in sha Allah.