Every one of the many Taiwanese people I know refer to it as Taiwan, too. It's very rare to hear anyone refer to it as the ROC, unless in the context of specifically making a distinction from the PRC, or in a formal document.
Right, calling the ROC and all of its holdings "Taiwan" just muddies the conversation and gives ammo to PRC shills claiming "Taiwan is a province of China" which deliberately uses the name of a single ROC holding and the ambiguous "China" term.
Do you tell your friends about your summer trip to the Republic of Korea? Or were you visiting the Kingdom of Belgium that year? Do those friends invite you to visit their hometowns in the French Republic, or the Federal Republic of Germany? Maybe you can stop at the Grand Dutchy of Luxembourg along the way from one to the other?
When shills from an aggressor nation in a highly politicized international conflict intentionally inject ambiguity into the names used by the states on either side of the conflict, you should strive to be as articulate as possible to avoid misunderstandings.
People commonly refer to the United States of America as "America" which is odd since there's also Central and South America. Being common doesn't equal being correct, and in this case the ambiguity is used by the aggressor state (PRC) to get people to believe a certain narrative. I'll continue to inform folks where I can as most people aren't aware of the situation between the ROC and PRC. I don't care about downvotes on this site _especially_ if it's because I'm stating facts that people do not like.
Here's the TAIWAN ALLIES INTERNATIONAL PROTECTION AND ENHANCEMENT INITIATIVE (TAIPEI) ACT OF 2019. It starts: To express United States support for Taiwan's diplomatic alliances around the world.
The name "Republic of China" (as opposed to "People's Republic of China") isn't used. However there are sentences like this:
Since the election of President Tsai Ing-wen as President of Taiwan in 2016, the Government of the People's Republic of China has intensified its efforts to pressure Taiwan.
lol, see my first post in this thread. I said I didn't like the fact that the USA calls the ROC "Taiwan", and I think you are overestimating my ability to influence USA foreign policy. The USA doesn't have formal diplomatic relations with the ROC so using "Taiwan" is a kludge.
I don't have any dislike for the fact that the ROC is an independent country, whether my government diplomatically recognizes them as such or not. I'm just pointing out that, if a Taiwanese family invites you to dinner, they're going to be weirded out by you continually saying "Republic of China" throughout the conversation.
I have lots of Taiwanese friends, but I appreciate your concern. I do use 中華民國 when talking about politics or anything related to the government or cross-strait relations. If I'm talking about the island of Taiwan specifically, I have no problem saying "Taiwan".