It's not necessary to wait 4 years for the next Olympics. There are many other sporting events and tournaments that take place annually and can be a great alternative. For example, World Championships and continental championships in various sports. There are also regular seasons in leagues like the NBA, NHL, and others. There's always something interesting to watch and bet on!
For me, the best events to watch and bet on are the soccer World Cup, the Olympics and the Euro (Copa America too, but this year it was very weak)
Then the Champions League
Thankfully, DuelBits runs special promotions on all these events
When one of these events ends, there's a big emptiness mainly because it's a cool atmosphere, many users post more on the forum, the games are on TV more, there's a greater atmosphere of competition than national championships for example, or smaller championships
I like surfing a lot too, but it's hard to find a place to place bets
I hope one day Duelbits will add surfing to the betting as well