First Hac is farz and often ritual-focused; repeat Hac allows deeper spiritual engagement with familiar rituals — scholars advise prioritizing charity if others need their first Hac.
The first Hac is an farz worship that carries a unique combination of spiritual intensity and logistical overwhelm. Many first-time hacilar report being so focused on performing each ritual correctly — 'Am I doing this right? Where do I go next? Have I completed the count?' — that the deeper spiritual dimensions are only fully appreciated in reflection afterward. The sheer sensory experience of seeing the Kabe for the first time, standing at Arafat, and being in the midst of millions of fellow hacilar is powerfully emotional and often described as life-changing.
Repeat Hac (which is voluntary/nafl after the first) offers a different experience. The rituals are familiar, the logistics are understood, and the haci can focus entirely on the spiritual quality of their worship. Many repeat hacilar report that their dua at Arafat is more focused, their tavaf more contemplative, and their overall experience more spiritually profound. However, scholars note an important consideration: if your community members or relatives cannot afford their first Hac, spending the money to support their farz Hac is more meritorious than performing your own voluntary repeat Hac. Hz. Peygamber (sallallahu aleyhi ve sellem) indicated that the farz Hac of another person takes precedence over a voluntary Hac for oneself.
Source: al-Nawawi, al-Majmu'; Ibn Taymiyyah, Majmu' al-Fatawa