"worthwhile to attend" is correct and usable in written English.
You can use it when you want to describe something that is worthwhile to take part in, such as attending an event or meeting. For example: "The seminar was so informative, it was definitely worthwhile to attend."
This mutually reinforcing cycle of factors was summarised by Farai, who expressed his disappointment that it was not worthwhile for him to attend: "My heart wants to go but the support groups are far away.
"It's definitely worthwhile to look into".
"These changes may require you to alter long-standing plans to attend worthwhile events".
For instance, public acknowledgements or rewards for innovative teaching contribute to a culture of continual improvement; stipends for scholarship of teaching and learning can make it worthwhile and normative for instructors to attend closely to issues in their own classroom; and including discussion of teaching in departmental meetings contributes to normalizing conversations about instruction.
She says that it is certainly worthwhile for postdocs and grad students to attend, "even if only for networking possibilities with pharma and biotechnology companies".
So before saying "yes" to a friend's invitation to attend a Holi party, it's worthwhile to take a second look at the event itself.
Still, racking up a big bill to attend a name-brand school is a worthwhile investment, most studies show.
Our questionnaire also highlighted that inviting patients for CVRA may be worthwhile with almost half indicating that the invitation alone encouraged them to attend and have their 'heart health' assessed.
Labour officials are asking why Cameron is not willing to attend the debate in person but thinks it is worthwhile to send communications people to denigrate Miliband's performance.
"It will be difficult in the short term to find students able to pay their own fees to attend until there are jobs available to make it seem worthwhile," Smith says.
