I do not know about others, but for me the exchanges are very important. I spend most of my time on cryptocurrency there. All the buying and selling there, it increases bitcoin's visibility in different segments of the population. Exchanges have their disadvantages, but it is wrong to underestimate their role. Especially the decentralized system, it seems to me its role is incredibly significant to perform bitcoin manipulation and more secure. I would never say no to the exchanges.
Some of the exchange are scam and the same wrong exchange, because i understand that some of the exchange put a condition that will be difficult for their investors or exchangers will be difficult to solve when they are in trouble and mostly their kind of KYC verification,so it's good for someone to go exactly and research for some exchanges before starting investing in cryptocurrency exchange the way i noticed some of the problematic of exchanges.