>but if it's just about you, the speed of light is no limitation at all
It's a huge limitation, even just getting propelled to "big enough speed", say 1/10 the speed of light.
We barely do 1/1500 the speed of light, in unmanned probes, and only because we sling shot on Solar gravity, not as propulsion or anything, and at 1400 o Celcius, plus deadly radiation, not to mention any micro-meteor as big as a particle of dust could kill someone there).
> It's a huge limitation, even just getting propelled to "big enough speed", say 1/10 the speed of light.
If you can't even get up to 1/10 the speed of light, then you wish the speed of light was a huge limitation, but it's actually not affecting you at all.