Ooh, topical question, Diksha!
Plenty of potential angles to consider, so I'll answer systematically:
First of all, It needs making clear that people coming from Europe to Asia for holidays are generally over-medicated. Of course, it's better to be safe than sorry and the first time I travelled I also got a variety of jabs beforehand, as recommended by every available source of repute. I can't remember now, how many or what for (one of the hepatitis'... I think?). Nor did they cause me any noticable ill-effects, I don't think.
However, unlike many, I didn't take malaria tablets while away. Those I met who did take them, all complained of either feeling ill, having night terrors, having weird mood swings, insomnia, paranoia or assorted other unpleasantness.
I mention this as an illustration of my point. Whether malaria, hepatitis, scarlet fever or whatever else, holiday-makers are routinely not told realistic odds of actually contracting a tropical disease, so can't weigh risks/ side-effects in anything like an informed way.
This is borne out by the many, many expats living in Asia whose vaccines long-since ran out and who have (mostly) lived here happily and successfully for years and decades without the benefit of things like malaria tablets. The prevailing attitude is an acceptance that horrid diseases are possible, tempered by an awareness of their relative rarity. I have lived here and in Thailand, in the city and in provinces for about 8 years now. I take no more precautions than I would in Europe and I have never been badly ill.
The flip-side of this, of course, is when you DO get unlucky, as some inevitably must. My friend has had malaria and, twice, dengue fever. He confirms that they are VERY unpleasant things to suffer from! But even worse things are possible: Mosquitos can also carry such horrors as Japanese Encephalitis, a sickness so severe that survivors are often left with cerebral palsy.
But, then again, are these things travellers are immunised against? As far as I remember, no.
The point here is that being in the tropics is always something of a lottery, whether vaccinated or not. I think many of the jabs travellers get are pointless and undoubtedly do more for peace-of-mind than health. Getting a hep' jab or a tetanus top-up is probably not a bad idea. But if anything is going to cause side-effects, I'd rather take my chances.
As far as the Covid jab is concerned: I'll take it!
I'm not particularly worried about getting sick from Covid.. I'm young and healthy and I'll very likely recover.
No, this vaccine is all about allowing me the freedom of movement that, as a globe-trotter, I value so highly.
It was announced today that foreigners will be able to get vaccines free here. Although I would probably prefer a western vaccine than a Chinese one, I am not concerned about any ill-effects (or being sterilised by Bill Gates' 5G microchips): I have a decent basic grasp of science and I will take my jab with earnest enthusiasm.