Yes, it's very cool, because all the altcoyins have gone up, everything is becoming more expensive. But maybe all of us are waiting for sevit in the near future. Maybe it's just decided to move it. So do not relax. Buy altcoyins, while they are still at a low start, then it may be too late. 
Yes, We can Say That Buying Altcoins Can be A Good Idea of Investing or can be used Also in Trading, But They Are All The Same coins but in Difference is Their Volatility, Bitcoin is The Leading Coin and Alts Are just Starting to uprise. As Far As I know The Owner of Bitcoin Hides His/Her Identity so How can we Know If He/She Fully cancelled The Segwit maybe this is Just A Self preparation for the Real Incoming Segwit.