You've got to focus on what you enjoy and what gives you the most happiness.
100% agree, I remember when I first starting collecting and discovered all the amazing RC's from Taiyo. In a way I was shocked that there was such a variety of designs.
As a kid the Lamborghini Countach and Ferrari F40 were my, (and still are my) favorite cars and discovering the twin turbo Lambo with a speed of 31 km/h !!! was an awesome feeling. Even by today's standards that is pretty fast. I knew I had to have one and that is what keeps me going in the hobby of collecting.
Hopper