The preference for the appearance of guitars, whether beat up or pristine, is largely subjective and varies among individuals. Some people appreciate the aesthetics of a worn-out or relic'd guitar, as it can give an instrument a vintage or well-loved character. These imperfections can add a sense of history and personality to the guitar, potentially enhancing its visual appeal.
However, it's important to note that the appearance of a guitar does not necessarily correlate with its sound quality or playability. A beat-up or worn-out guitar may or may not sound better than a new and well-maintained instrument. The sound and tone of a guitar depend on factors such as the quality of materials, craftsmanship, setup, and the player's technique. The visual condition of the guitar does not directly affect these sonic aspects.
Ultimately, whether a guitar sounds better or worse due to its appearance is subjective and depends on personal preference. Some players may prefer the vintage or road-worn look and feel, while others may prefer the pristine and unblemished appearance of a new instrument. The most important factor when choosing a guitar should be how it feels and sounds to you as a player, rather than its external appearance.