Are SSTO’s worth it?

From a purely vanilla standpoint and for sheer fun of building and flying an SSTO, then I would say yes, the feeling of accomplishment after having built one is great (maybe pretty close to the first time you land on luna for ex). However for launching heavy payloads into orbit I would say theyre not as useful, 2-stage-to-orbit craft are much easier and simpler and have higher payload capacities. XML of engines and tinker panel are ways to get around this (obviously), but after a while this gets boring and imo building craft without tinker panel is more challenging. XML does have its merits but that is a whole other conversation.

@pedro16797 yes but i think it is more interesting to make sstos that take off and land like a plane

@Insanity it is really easy to make a vertical launch and landing ssto and you don't really need combined cycle engines for that

The main planet is not as small as in ksp but it is still much smaller than real Earth, so it is still worth it

SSTOs are way more difficult here than in ksp because of the lack of rapiers and the fact that nuclear engines arent completely overpowered and because the planet is bigger.
But it is rewarding to get one to work.

Everyone should try building a lot of different things and find out what they like to build. Maybe landing an SSTO gives you a feeling of accomplishment that other projects don't.