The choice ultimately depends on the urgency of pain relief, comorbidities, imaging, and patient priorities regarding the riskbenefit balance of each method
It has roots in traditional hacker culture but applies to technology that modifies something organic, from altering cells in a petri dish to ultra-freaky grinder body tweaks, like implanting speakers in your eardrums or embedding a vibrator near a mans pelvis (this exists and is called the Lovetron 9000), or, very recently, editing your own genes
Enhanced hormonal balance and extended fibroblast viability can promote greater collagen and elastin synthesis
The right choice is a personal one, best made after discussing your health goals with a professional
Topical anaesthetic can be applied if needed, though most patients find it tolerable without