For me better if we support all coins. Because we can benefits this once the price increase more. Like bitcoin for sure the price will increase more so you can make more profit. I think altcoins also can get more profit too and become very high so you can get more profit from this.
The problem is not whether I support bitcoin or any other kind of crypto currency, the problem which I am seeing is that how many more coins are going to be launched in the future? Because presently if we see, we have more than 200 kinds of coins in the market which have different investments in them and soon they will be around 1000. On other hand, at a same time, one person can invest in only 2-3 coins or max 5, but if there will be a huge number of choices available then there is no fun in investing in them as it will not benefit the investor.