To some extent I think you're right, but for outdoor recreation that somewhat depends on where you live and what type of terrain your hobby requires. Switzerland as a country is full of beautiful hiking scenery and opportunities so I imagine the travel to get to it even by public transit isn't an arduous one. In places where the terrain and landscape are more flat, barren or boring, the travel time to get to good hiking opportunities can be significant. For instance, the closest mountains to me are a 10hr drive by car; I could cross your entire country in about half that time. Unfortunately location plays a large role in the viability of using public transit for certain hobbies.
See the fun thing is we have passenger rail from my city all over the country...but dogs aren't allowed on it if they're over 20lbs. I've even written the company pleading for them to review their policy and citing the crazy amount of dog sport participants that could use their service, and even suggesting they require an easily verifiable 3rd party obedience certificate and was effectively told to go pound sand.
Almost half of households in the US have dogs, so it's frustrating that travel with them is limited to personal cars (there's only one commercial airline that flies large dogs in the US and it has very limited destinations.) I would LOVE to take a train to a backpacking trip in the mountains, but then we're back to leaving my pup at home. This country needs a major culture shift on a great many things, not the least of which is public transit.