The Northern Irishman has also said he does not feel a responsibility to help grow golf's worldwide profile, which was one of the prime motivating factors in the sport's push for Olympic inclusion.
"I don't feel like I've let the game down at all", McIlroy said on Tuesday in a news conference ahead of the Open Championship, which has taken a backseat to Olympic chatter this week. "I didn't get into golf to get other people into the game".
"I didn't get into golf to try and grow the game", said the Northern Irishman, a four-time major victor.
"I'm excited. It'll be pretty special to be an Olympic athlete and get to walk in the opening ceremony and be part of the whole thing".
Rose said: "It's obviously disappointing, of course it is". There's no point lying about that. It's right there in black and grey: "I hit a little white ball around a field sometimes", reads the description under the four-time major winner's Twitter handle.
"But I've been fairly unwavering in my commitment to it". The front nine will play much easier than the back nine, so it's important to get off to a good start.
"The Open at Royal Troon and the eight other golf events in Scotland this year only enhance further our country's reputation as the home of golf, with many more lined up for future years such as the Solheim Cup in 2019".
The world number four told BBC Radio Five Live: "I think golf in the Olympics is great for golf, it's great to grow the game, there is no question about that".
"I told him he had to do what was best for himself", Fowler added after giving a lesson to schoolchildren at Troon as part of the HSBC Hour, which offers an hour of free golf to children and their families at nearly 300 golf clubs across the UK. I'm well and truly over the US Open.
"Whether it's the best idea to have the top professionals there, whether it should be amateurs where it's the pinnacle of the amateur game, like boxing is, then you move onto the professional level, I don't know".
"I don't think it was as hard a decision for me as it was for him", McIlroy said. "It's just up to me to learn from the mistakes of that Sunday afternoon and bring that into the next one". "It just doesn't feel quite the same to me". The squad, which was formally unveiled Wednesday at Royal Troon, also includes Masters champion Danny Willett, with Charley Hull and Catriona Matthew on the women's side.
The 35-year-old said: "Hopefully it's a slip of the tongue - one of those moments". I thought it was something different than we play on week-in or week-out in the U.S., or even around the world. It's nothing you can work on, I don't think.