Design a Form in Excel

While it is normal to use PDF forms and online forms, I can design a Form in Excel. The benefits of such a form are as follows:
1) To make a database of all the entries in numerous forms, the excel files could be easily used and a macro could be developed to make a database of thousands of entries in just seconds.
2) In Excel forms, drop down menus can easily be used
3) These forms are compatible across all platforms such as Windows, Mac, Linux and Android.
4) In the form, you could also use Radio Buttons and Check Boxes but since these rely on VBA, these would not show on Tablet PCs, iPhones and Android based Smart-Phones.
5) If there are any calculations to be made, for instance, if it is an Order Form, an Excel form can easily calculate multiple factors.