I have lousy veins, and every IV is a torture. I can't imagine having gotten through 12 rounds of FOLFOX and now Keytruda every three weeks, not to mention countless blood draws, without my port. I love my port.
I get my scans done at a place where they can't access my port, and thus have to have an IV. The latest was last week. Nasty, painful, and took 2 tries. Reminded me of how much I appreciate the port.
ETA: if I thought I were only going to have, say, 6 infusions, 3 weeks apart, I *might* have chosen not to have a port. But I've heard that oxy does a number on your veins, and the degree of certainty regarding ongoing treatment varies, naturally.