I have and I haven't. I like learning languages and how words and the use of words help form a culture, but I don't travel and don't hae any plans to travel in teh forseeable future. The lack of an actual need to learn a language causes me to dift in and out of studying. I'e been learning Chinese for close to 9 years, but because I only use it read cute children's books I haven't progressed much verbally. Sometimes I even go months to year without studying. But I haven't given up. I never gave myself a time frame or a use for this knowlegde, so I practice when I want to, and stop when I don't. I find that I retain more everytime I start up again and I learn more quicker. I guess the foundation is becoming strong in this one! I also study Spanish and French this way. However, living in America those 2 are more relivent to me, so I ever become fully bilingual or multi-lingual I think I will know either French or Spanish.