I measure my net worth in USD no matter how much altcoin I find myself investing in. Maybe this is because I am so accustomed to thinking in USD in day to day life and I only see investing in altcoins as a fun way to earn some extra money. I am also a college student so my personal assets dont amount to much compared to others but I am investing in my education and I see that as adding to my net worth. Overall, I still think in dollar amounts when investing in altcoin or anything else.