Actually those who think negatively about Bitcoin have no idea about Bitcoin. Any work should be done by analyzing it yourself, if you work according to the advice of others, that work will never be successful. So if you want to invest in Bitcoin then try to know about Bitcoin before investing. You analyze well then plan to invest. If you want to succeed by investing in Bitcoin, there is no alternative to long-term planning. Now if you can hold your investment long term then definitely expect profit. So it's not a matter of seeing what others say, you keep investing with a long-term plan.