With LTC, you invest in a coin that has a totally unknown future.
With mining, there can be a technological breakthrough, and it will affect the coin. It can be a chip, it can be a memory, you don't know, but it can be crippled at any moment.
We all know that BTS has the chance to take over exchanges since it is a decentralized exchange, let's hope the people will notice that and start using it.
I like the decentralized system although it would be great if the BTS exchange will undergo more improvements so people will appreciate it more. Nonetheless crypto is guided with the spirit of decentralization making BTS very promising.