No,this was the correct decision.OBOR has has 2 goals - 1)to dump china's overproduction into these nations,and dump excess capital they have nowhere to invest in infrastructure projects which will be cycled back by chinese companies anyway
''But its most pressing concern is to find orders for its huge capital goods industry. While India’s industrial production is wasting away because of its acute shortage of up-to-date infrastructure, China is literally suffocating in excess capacity. China produces more than 800 million tonnes of steel a year, almost exactly half of the world’s output, and has run out of places in which to use it. The provincial governments have built all the airports, container ports and all-weather highway they could think of. Starting with a single line with 20 pairs of bullet trains in 2005, the Chinese have built 19,000 km of high speed train track and are running 2,300 pairs of bullet trains on them today. And residential and commercial space is so overbuilt that as far back as 2013 China had 55 million square metres of unoccupied apartments.
The world market too is saturated and in a recession. Beijing’s attempt to dump some of its steel on it last year caused a crash in prices that forced US Steel to lay off 39,000 employees, and precipitated a crisis in Arcelor-Mittal. The global outcry that followed forced it to promise to close down 150 million tonnes of steel making capacity by 2020. That is almost twice the entire steel-making capacity of India today.
Overcapacity is even greater in its heavy engineering industries – the industries that build the industries that manufacture its products. In the four years that ended in December 2015, China added more than 300,000 MW – more than India’s entire power generating capacity – to its coal power generating capacity. But it was able to bring only a fraction of it into use, and that too only by reducing the capacity utilisation in existing plants.
Today, the only orders these plants are getting are from enterprises that are modernising their existing production capacity.OBOR is an extension of China’s original shift of investment to the western provinces, and is the only way left to keep the millions of workers in the heavy industries employed. But just the ‘belt’ and ‘road’ as conceived today will not suffice. For that China needs India to become a partner, for while the combined GDP (in hard currency) of the seven countries in which the bulk of OBOR investments are currently envisaged: Russia, Uzbekistan, Tajikistan Turkmenistan, Kazakhstan, Pakistan and Malaysia was $2.1 trillion in 2015, that of India alone was $2.256 trillion.''
2) Build a network of strategic hegemony in south asia as economic penetration is the first step.
Without Indian participation OBOR ha no relevance in south asia.Indian market and indian economy alone.Without indian participation Sri lanka,Bhutan,Bangladesh,Myanmar are not going to be reachable in any meaningful way.
The final reason to say no is China renaming places in arunachal pradesh and blocking our NSG entry,helping mahsud azhar must pay a geopolitical price.If u screw with our interests ,we will screw with yours simple as that.