Dear Rendah,
When you work on something new, you start to explore more questions built in your mind, and when you attend the training, information sticks100% in your mind, you don't forget them easily.
Training is part of organizational development, very important to build challenging skills and to cater business requirement.
just think about the younger generations growing up and you don't want to be an old school, moreover, it also helps in self improvement. So if you are updated, more competitive advantage in short.