First of all, this is not something that we (neither the moderators, nor the community) can solve. This is how the platform is built, so if you wanted this to be changed, you should post a feature request for the whole StackExchange.com network.
Regarding using the same title, as was already suggested to you, you can simply use a slightly different title. Furthermore, an SE question can be either closed or deleted. Questions that seem to be off-topic are closed, so they cannot be answered any more, but are still visible on the site. If they don't have up-votes and answers, they are automatically deleted after a period of time. Otherwise they stay, as it is assumed someone may still find them helpful. So there is a point in not allowing for duplicate titles.
Moreover, I guess that this problem would arise if using a very general title, and you shouldn't typically use very general titles. It is better to stick to titles that are descriptive and specific for your problem, rather than general. If you have a general question and the general title is taken by a question that was closed, or asks for something that is inconsistent with the title (unlike your question), then you could always suggest an edit for the previous question, and then after that edit is accepted, post your question using the title.