It started as a convenience for people willing to let people they like crash at their place while they are away and get some pocket money for their own travel.

It started as a convenience for people willing to let people they like crash at their place while they are away and get some pocket money for their own travel. Mostly unofficially, yes, and I feel no problem with this. But they turnt it into big business. Now whole buildings are built for AirBnB, professional landlords take mortgages to buy apartments just to let them at AirBnB, it's all over in the news, the prices are on par with hotels and the landlords seemingly don't care about any "face control" (as they normally would if it was about letting their actual home for a weekend) so even thugs can have the keys.