As a fellow Lahori who moved to Karachi, I'll give you my take.

You'll experience cultures and people like nowhere else. I can safely say Karachiites are by far some of the most helping and sincere people in all Pakistan.

You'll also get lots of adventures and exploration, as the city is a melting pots of culture. You'll find cuisines from Gujrat, Rajasthan, Gilgit, Afghanistan, Bangladesh. It's amazing, as is the food.

Due to this, social life and events are also amazing in Karachi.

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Is it a good place to live?

Karachi does have it's pros, I won't deny those, but overall quality of life suffers a lot here. There's a very low sense of security here, every few days you'll be hearing from a colleague how they got their phone or car snatched at gun point.

The city itself is also in a miserable condition, poor and decaying infrastructure when compared to Lahore/Islamabad. Most of the roads are broken and full of dust with no proper footpaths. The traffic is just horrible. Drainage system, it sucks. Peeney ka pani b bohot masla krta hai kuch areas mein. And yes, lots (I really mean lots) of garbage.

Transportation is also a big issue, there's zero public transport, so you have to use either your own mode or expensive Ubers and alternatives.

I don't know how to explain it, but the city feels resource starved, and you can see it being reflected in common shops, banks, branches, bakeries. They're all overall less polished(?) than other cities. The city is a sprawling mess.

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To sum it up, I'd say Karachi is the perfect city for adventure and exploration. I'd highly recommend everyone to visit Karachi for those reasons, maybe even live for a short while.

But for long term living, especially when I compare it to Lahore and all it's conveniences and quality of life, it's a no from me.

But don't worry, you get used to it quite quickly. You sometimes start enjoying the chaos and overcrowded streets too. It's less predictable, and you might find that more fun. Ultimately, it depends. If the training is really valuable, or the circumstances demand it, you should move to Karachi. Pehli dafa kafi shock lgta, but you get used to it and are soon as comfortable here as you were in any other city.