Is it still worth growing oranges if Xylella has arrived?

I'm not an agronomist, but I work in the area and I've seen with my own eyes what happens with Xylella. I won't tell you it's simple, because it isn't, but "pointless" is too strong a word in my opinion.

The situation in Puglia is serious, true, but it depends a lot on exactly where you live. If you're in the already heavily affected areas, like in Salento, planting normal oranges is risky, I'll admit that. But there are varieties that have better resistance, and then there are containment techniques that have developed over the last few years - plant screening, vector control with nets, careful management of plantations. I know people who keep farming, but they pay attention to how they do it. It's not like the bacterium shows up tomorrow morning and everything disappears, it's more a matter of conscious coexistence.

If you're serious about wanting to keep going, I'd advise you to talk to local citrus people, maybe grower associations in your area, or the regional agriculture department. They know well which varieties hold up better and which protocols actually work. There was a colleague who used to pass by who had an orchard and he'd always tell me his strategies - what you're trying to do is invest in what resists, not in what you hope won't arrive. It's a bit like when I do safety work: you prevent what you can, you don't cry over spilled milk.