Yes, once you realize that it is just like a third but an octave lower, the name "tenth" loses its myst and it's all fun.
Some players really get scared indeed when you talk about chords with 9ths, 11ths, 13ths. It's just like being afraid of playing past the 12th fret on the neck. Once you get used to the idea that the neck just starts repeating over from that fret, you start to get more comfortable.
I'm not saying I'm 100% not afraid of 11ths, 13ths and their harmonic consequences anyway.
But we're talking about intervals and not chords after all.