Fixed zodiac signs are probably the hardest ones to understand - particularly by people who do not have them meaningful in their birth charts.

Mutable signs like changes a lot (avoiding boredom), which may result often in something that fixed signs perceive as superficiality. Cardinal signs like to invent and start things, as they have in mind something they want to achieve the easiest way possible (by forcing, like Aries, or by looking for instant negoations, like Libra). Fixed signs, on the other hand, rather state their ground. But why to do that??? Is there any sense in not looking for more?

It depends - on perspective on what means "more". Each quality of the zodiac signs give a different perspective, of course.

I think that fixed zodiac signs are about quality of the experience, rather than quantity (Gemini, Virgo, Saggittarius, Pisces) or ad hoc solutions (Aries, Cancer, Libra, and even Capricorn). This is what is behind their motivation and surprising patience. They want to get most of everything: whether these are personal goals (Leo), deep intensive relationships (Scorpio), innovative ideas and movements (Aquarius), or material beauty carved in any form (Taurus). They want so badly the best that is available in the field of their searches, that they prefer to wait rather than risk staying with a worse solution! How counter-intuitive it seems to the other 8 zodiac signs, which tend to do something opposite: they rather fear of missing any opportunity, so they just typically take the lowest fruits.

Fixed zodiac signs therefore plan a lot, and prefer long-term strategy to make sure that they would gain the best, instead of simple tactics preferred by the other zodiac qualities. The former, of course, also have a big problem with releasing anything that they fought for so hard, so long and put so much effort into.