People buy jewelry for others to make them feel better and happier. Often, jewelry indicates commitment. Replacement triggers are similar to that: they are small, somewhat expensive and make your interaction with the gun more pleasant.
I already have Timney triggers in my M48 Yugo Mauser and Ruger 1o-22. The next rifle to get the upgrade is the Superior Arms HBAR Varminter. It’s a 1/2MOA rifle but shooting that with milspec lower is challenging.
Triggers are great present for people who just can’t pull the trigger on a discretionary puchase for themselves. Make sure to figure out who — you, the recipient or a gunsmith — will install the upgrade.