Absolutely the right choice. I do triathlons and your comment makes me think of all the people who turn up, do an Ironman and leave the sport after. Or people who sign up for a marathon, do it, then never run again.

Meanwhile there are shorter events you can do on much less training and cheaper equipment to see if you’ll like it before investing in the extreme end of the sport. If you run a 10k and hate every step, you’ve saved yourself a lot of time, pain and money.